Fluids with dipolar coupling

Size: px
Start display at page:

Download "Fluids with dipolar coupling"

Transcription

1 Fluids with dipolar coupling Rosensweig instability M. D. Cowley and R. E. Rosensweig, J. Fluid Mech. 30, 671 (1967)

2 CO.CO.MAT SFB/TRR21 STUTTGART, ULM, TÜBINGEN FerMix 2009 Meeting, Trento A Quantum Ferrofluid Experiments with dipolar BECs Jonas Metz, Ashok Mohapatra, Stefan Müller, Thierry Lahaye, Axel Griesmaier, Tilman Pfau Universität Stuttgart, Germany 5. Physikalisches Institut

3 Dipolar Gases Team Members 2009: Ashok Mohapatra Jonas Metz Stefan Müller Yong Wan Axel Griesmaier Tilman Pfau Former members: Ashok Axel Tilman Jonas Stefan Thierry Lahaye Marco Fattori Jürgen Stuhler Tobias Koch Bernd Fröhlich Theory: L. Santos, S. Giovanazzi, M. Ueda,Y. Kawaguchi, H. Saito

4 Outline A quantum ferrofluid Nature 448, 672 (2007) Stability of a dipolar condensate Nature Physics 4, 218 (2008) vs. d-wave collapse Phys. Rev. Lett. 101, (2008), Coherence New. J. Phys. (2009)

5 Interactions of ultra cold atoms dipole-dipole interaction long range anisotropic contact interaction short range isotropic chromium atoms with atoms (magnetic): Cr: Stuttgart (2005),, Paris (2007) Alkalis: Firenze (2008),, Berkeley (2008) heteronuclear molecules (electric): no condensates yet but many to come s-wave scattering 6µ B 100a Ketterle 0 Group, MIT

6 New effects in dipolar quantum gases long range Structured superfluid phases «checkerboard» (isolating, one atom every second site) e.g.. K. Góral et al., PRL 88, (2002). Tunneling dynamics & ground state in double/triple well potentials anisotropy roton in the excitation spectrum L. Santos et al., PRL 90, (2003). new equilibrium shapes S. Ronen, D. C. E. Bortolotti, and J. L. Bohn, PRL 98, (2007); O. Dutta and P. Meystre, PRA 75, (2007). multidimensional solitons P. Pedri and L. Santos, PRL 95, (2005); I. Tikhonenkov et al. PRL 100, (2008). large spin S=3 Rich phase diagram for a S=3 spinor condensate L. Santos and T. Pfau, PRL. 96, (2005) L. Santos, M. Fattori, J. Stuhler, T. Pfau, PRA 75, (2007) Review: T Lahaye et al. arxiv: v1 (2008)

7 Dipolar interactions in a condensate Gross-Pitaevskii equation for the order parameter: polarized sample Dipolar interaction: NON-LOCAL & ANISOTROPIC term elongation of a polarized dipolar condensate

8 perturbative effect of DDI Expansion of a dipolar BEC PRL 95,, (2005), PRL 97,, (2006)

9 Energy scales connected with dd-interactions Estimate for typical BECs n ~ cm -3 r ~ 100 nm electric heteronuclear molecules in their ro-vib ground state (dipolar moment & stability) d 1Debye magnetic Chromium atoms µ 6µ B U dd 10 mk U dd 35 nk

10 Relative strength of the dipole-dipole interaction dipolar parameter alkalis dd Spherical condensate becomes unstable for ε dd > m 2 12 a dipolar interaction contact interaction Chromium µ= 6 µ B heteronuclear molecules ~1Debye ε dd = PRL 97,, (2006)

11 How to go beyond perturbative effects?

12 Feshbach tuning of the contact interaction Feshbach resonances: a depends on external magnetic field B Feshbach resonances in Chromium [PRL 94, , (2005)] Zero crossing of the scattering length DDI becomes dominant Broadest resonance: G (Δ = 1.4 G): Control of the magnetic field on ~10-5 level needed!

13 Strength of the dipole-dipole interaction Feshbach resonance alkalis Chromium µ= 6 µ B heteronuclear molecules ~1Debye

14 Feshbach tuning of ε dd Nature 448, 672 (2007)

15 Time of flight experiments for various dd ε dd = 0.16 ε dd = 0.50 ε dd = 0.75

16 Strong dipolar effect ε dd ~1 ε dd 0.15 perturbative effect of DDI ε dd = 0.75 strong dipolar effect Inhibits the inversion of ellipticity! trap elongated along B Nature 448, 672 (2007)

17 Aspect ratio as a function of ε dd Dipolar interactions: elongation along Prediction of the hydrodynamic equations (no adjustable parameter) Nature 448, 672 (2007)

18 How to go beyond ε dd ~ 1? Stability of a condensate with partially attractive interactions?

19 Stabilzation of a dipolar condensate Spherical condensate becomes unstable for ε dd >1. polarized sample geometry contact interaction λ < 1 mainly attractive unstable λ > 1 mainly repulsive stable stable but small ε dd unstable

20 Experimental setup How to vary the trap aspect ratio? Superimpose an optical lattice onto the ODT z θ = 8 waist ~ 100 µm x Period: = 7 µm Radial confinement: ODT Aspect λ < 1ratio : λ varies from λ > 1~ 0.1 (no lattice) to ~ 10. mainly Loading attractive : mainly repulsive one site, sometimes two. BECs in separate traps unstable stable

21 A purely dipolar quantum gas (i) Create a condensate in a trap with aspect ratio λ (ii) Reduce the scattering length a For both traps: A condensate in an oblate trap is more stable! Nature Physics 4, 218 (2008)

22 Stability criterion with dipole-dipole interaction Gaussian Ansatz: Gross-Pitaevskii energy functional: the local minimum vanishes for a a crit : (example λ = z / =10)

23 Exact stability diagram a crit as a function of the trap aspect ratio λ (N = 20,000, ) Full solution of the 3D GPE (John Bohn s group, JILA) Stabilization of a purely dipolar condensate! Nature Physics 4, 218 (2008)

24 How does the cloud collapse?

25 Initiating the collapse Fast quench of a to a f < a crit. Stable Unstable Vary t hold

26 Theory vs. practice Eddy currents determine time dependence Setpoint (current in the coils) Actual value of a (due to eddy currents)

27 Dipolar collapse (theory vs. exp.) Phys. Rev. Lett. 101, (2008) Theory by Masahito Ueda s group, Tokyo No free parameters but correct evolution of the magnetic field!

28 Experiment vs. Simulation Experiment GPE Simulation

29 Dynamics in different trap geometries - prolate (cigar shaped) trap λ weakly cigar shaped trap no free parameters, using measured L 3 = m 6 /s λ 0.7

30 Collapse in a pancake shaped trap oblate (pancake) trap -Dipole-dipole interaction is mainly repulsive in an oblate trap, without s-wave scattering, the BEC would be stable Collapse happens at negative scattering length

31 D-wave symmetry oblate (pancake) trap Iso-density surfaces Inverse Abel transform

32 D-wave symmetry of the collapse Recover 3D structure from 2D projection Iso-density surfaces Inverse Abel transform Reminiscent of the angular (1-3cos 2 dependence of the underlying interaction (d-wave) z d-orbital

33 Does coherence survive the collapse? Excellent agreement with GPE simulation suggests: YES Direct observation of coherence by interference would give better insight

34 Coherence of the remnant cloud load two pancakes before condensation* BEC transition in the separate traps change a, then hold the cloud long time of flight (18ms) *large spacing ~7µm no tunneling between sites t tof

35 Coherence can survive even violent processes like a collapse

36 Future directions: Bose-Fermi mixtures Motivation: - Fermion mediated boson-boson interaction could lead to a stabilization of density waves O. Dutta, R. Kanamoto, and P. Meystre, PRL 99, (2007) = 0.05 g 3d ~g dd / d g ind ~ Fermion mediated Boson-Boson interaction - Existence of the fermionic isotope 53 Cr (laser cooled in Paris: R. Chicireanu et al., PRA (2006))

37 First BEC church window, Brigitte Simon, Lohmar (Germany) Thank You For Your Attention!

Summer School on Novel Quantum Phases and Non-Equilibrium Phenomena in Cold Atomic Gases. 27 August - 7 September, 2007

Summer School on Novel Quantum Phases and Non-Equilibrium Phenomena in Cold Atomic Gases. 27 August - 7 September, 2007 1859-5 Summer School on Novel Quantum Phases and Non-Equilibrium Phenomena in Cold Atomic Gases 27 August - 7 September, 2007 Dipolar BECs with spin degrees of freedom Yuki Kawaguchi Tokyo Institute of

More information

Confining ultracold atoms on a ring in reduced dimensions

Confining ultracold atoms on a ring in reduced dimensions Confining ultracold atoms on a ring in reduced dimensions Hélène Perrin Laboratoire de physique des lasers, CNRS-Université Paris Nord Charge and heat dynamics in nano-systems Orsay, October 11, 2011 What

More information

Dipolar Interactions and Rotons in Atomic Quantum Gases. Falk Wächtler. Workshop of the RTG March 13., 2014

Dipolar Interactions and Rotons in Atomic Quantum Gases. Falk Wächtler. Workshop of the RTG March 13., 2014 Dipolar Interactions and Rotons in Ultracold Atomic Quantum Gases Workshop of the RTG 1729 Lüneburg March 13., 2014 Table of contents Realization of dipolar Systems Erbium 1 Realization of dipolar Systems

More information

Spontaneous Symmetry Breaking in Bose-Einstein Condensates

Spontaneous Symmetry Breaking in Bose-Einstein Condensates The 10th US-Japan Joint Seminar Spontaneous Symmetry Breaking in Bose-Einstein Condensates Masahito UEDA Tokyo Institute of Technology, ERATO, JST collaborators Yuki Kawaguchi (Tokyo Institute of Technology)

More information

Roton Mode in Dipolar Bose-Einstein Condensates

Roton Mode in Dipolar Bose-Einstein Condensates Roton Mode in Dipolar Bose-Einstein Condensates Sandeep Indian Institute of Science Department of Physics, Bangalore March 14, 2013 BECs vs Dipolar Bose-Einstein Condensates Although quantum gases are

More information

Ultracold chromium atoms: From Feshbach resonances to a dipolar Bose-Einstein condensate

Ultracold chromium atoms: From Feshbach resonances to a dipolar Bose-Einstein condensate Journal of Modern Optics Vol. 00, No. 00, DD Month 200x, 4 Ultracold chromium atoms: From Feshbach resonances to a dipolar Bose-Einstein condensate Jürgen Stuhler, Axel Griesmaier, Jörg Werner, Tobias

More information

Exploring quantum magnetism in a Chromium Bose-Einstein Condensate

Exploring quantum magnetism in a Chromium Bose-Einstein Condensate CLEO Europe - IQEC Munich May 14th 013 Olivier GORCEIX Exploring quantum magnetism in a Chromium Bose-Einstein Condensate Laboratoire de Physique des Lasers Université Paris 13, SPC Villetaneuse - France

More information

Quantum droplets of a dysprosium BEC

Quantum droplets of a dysprosium BEC Quantum droplets of a dysprosium BEC Igor Ferrier-Barbut Holger Kadau, Matthias Schmitt, Matthias Wenzel, Tilman Pfau 5. Physikalisches Institut,Stuttgart University SFB/TRR 21 1 Can one form a liquid

More information

Stability and excitations of a dipolar Bose-Einstein condensate with a vortex

Stability and excitations of a dipolar Bose-Einstein condensate with a vortex PHYSICAL REVIEW A 79, 1361 9 Stability and excitations of a dipolar Bose-Einstein condensate with a vortex Ryan M. Wilson, Shai Ronen, and John L. Bohn JILA and epartment of Physics, University of Colorado,

More information

Quantum Quantum Optics Optics VII, VII, Zakopane Zakopane, 11 June 09, 11

Quantum Quantum Optics Optics VII, VII, Zakopane Zakopane, 11 June 09, 11 Quantum Optics VII, Zakopane, 11 June 09 Strongly interacting Fermi gases Rudolf Grimm Center for Quantum Optics in Innsbruck University of Innsbruck Austrian Academy of Sciences ultracold fermions: species

More information

Dipolar Bose-Einstein condensates at finite temperature

Dipolar Bose-Einstein condensates at finite temperature PHYSICAL REVIEW A 76, 4367 7 Dipolar Bose-Einstein condensates at finite temperature Shai Ronen JILA and Department of Physics, University of Colorado, Boulder, Colorado 839-44, USA John L. Bohn* JILA,

More information

Exceptional Points for Nonlinear Schrödinger Equations Describing Bose-Einstein Condensates of Ultracold Atomic Gases

Exceptional Points for Nonlinear Schrödinger Equations Describing Bose-Einstein Condensates of Ultracold Atomic Gases Exceptional Points for Nonlinear Schrödinger Equations Describing Bose-Einstein Condensates of Ultracold Atomic Gases G. Wunner, H. Cartarius, P. Köberle, J. Main, S. Rau Abstract The coalescence of two

More information

Dipolar chromium BECs, and magnetism

Dipolar chromium BECs, and magnetism Dipolar chromium BECs, and magnetism A. de Paz (PhD), A. Chotia, A. Sharma, B. Laburthe-Tolra, E. Maréchal, L. Vernac, P. Pedri (Theory), O. Gorceix (Group leader) Have left: B. Pasquiou (PhD), G. Bismut

More information

Introduction to Cold Atoms and Bose-Einstein Condensation. Randy Hulet

Introduction to Cold Atoms and Bose-Einstein Condensation. Randy Hulet Introduction to Cold Atoms and Bose-Einstein Condensation Randy Hulet Outline Introduction to methods and concepts of cold atom physics Interactions Feshbach resonances Quantum Gases Quantum regime nλ

More information

A Mixture of Bose and Fermi Superfluids. C. Salomon

A Mixture of Bose and Fermi Superfluids. C. Salomon A Mixture of Bose and Fermi Superfluids C. Salomon Enrico Fermi School Quantum Matter at Ultralow Temperatures Varenna, July 8, 2014 The ENS Fermi Gas Team F. Chevy, Y. Castin, F. Werner, C.S. Lithium

More information

From laser cooling to BEC First experiments of superfluid hydrodynamics

From laser cooling to BEC First experiments of superfluid hydrodynamics From laser cooling to BEC First experiments of superfluid hydrodynamics Alice Sinatra Quantum Fluids course - Complement 1 2013-2014 Plan 1 COOLING AND TRAPPING 2 CONDENSATION 3 NON-LINEAR PHYSICS AND

More information

A study of the BEC-BCS crossover region with Lithium 6

A study of the BEC-BCS crossover region with Lithium 6 A study of the BEC-BCS crossover region with Lithium 6 T.Bourdel, L. Khaykovich, J. Cubizolles, J. Zhang, F. Chevy, M. Teichmann, L. Tarruell, S. Kokkelmans, Christophe Salomon Theory: D. Petrov, G. Shlyapnikov,

More information

Fundamentals and New Frontiers of Bose Einstein Condensation

Fundamentals and New Frontiers of Bose Einstein Condensation Experimental realization of Bose Einstein condensation (BEC) of dilute atomic gases [Anderson, et al. (1995); Davis, et al. (1995); Bradley, et al. (1995, 1997)] has ignited a virtual explosion of research.

More information

Cold Polar Molecules and their Applications for Quantum Information H.P. Büchler

Cold Polar Molecules and their Applications for Quantum Information H.P. Büchler Cold Polar Molecules and their Applications for Quantum Information H.P. Büchler Theoretische Physik III, Universität Stuttgart, Germany Outline Introduction to polar molecules - quantum melting transition

More information

From BEC to BCS. Molecular BECs and Fermionic Condensates of Cooper Pairs. Preseminar Extreme Matter Institute EMMI. and

From BEC to BCS. Molecular BECs and Fermionic Condensates of Cooper Pairs. Preseminar Extreme Matter Institute EMMI. and From BEC to BCS Molecular BECs and Fermionic Condensates of Cooper Pairs Preseminar Extreme Matter Institute EMMI Andre Wenz Max-Planck-Institute for Nuclear Physics and Matthias Kronenwett Institute for

More information

Nonlinear BEC Dynamics by Harmonic Modulation of s-wave Scattering Length

Nonlinear BEC Dynamics by Harmonic Modulation of s-wave Scattering Length Nonlinear BEC Dynamics by Harmonic Modulation of s-wave Scattering Length I. Vidanović, A. Balaž, H. Al-Jibbouri 2, A. Pelster 3 Scientific Computing Laboratory, Institute of Physics Belgrade, Serbia 2

More information

BEC of 6 Li 2 molecules: Exploring the BEC-BCS crossover

BEC of 6 Li 2 molecules: Exploring the BEC-BCS crossover Institut für Experimentalphysik Universität Innsbruck Dresden, 12.10. 2004 BEC of 6 Li 2 molecules: Exploring the BEC-BCS crossover Johannes Hecker Denschlag The lithium team Selim Jochim Markus Bartenstein

More information

Non-equilibrium Dynamics in Ultracold Fermionic and Bosonic Gases

Non-equilibrium Dynamics in Ultracold Fermionic and Bosonic Gases Non-equilibrium Dynamics in Ultracold Fermionic and Bosonic Gases Michael KöhlK ETH Zürich Z (www.quantumoptics.ethz.ch( www.quantumoptics.ethz.ch) Introduction Why should a condensed matter physicist

More information

Emergence of chaotic scattering in ultracold lanthanides.

Emergence of chaotic scattering in ultracold lanthanides. Emergence of chaotic scattering in ultracold lanthanides. Phys. Rev. X 5, 041029 arxiv preprint 1506.05221 A. Frisch, S. Baier, K. Aikawa, L. Chomaz, M. J. Mark, F. Ferlaino in collaboration with : Dy

More information

BCS-BEC Crossover. Hauptseminar: Physik der kalten Gase Robin Wanke

BCS-BEC Crossover. Hauptseminar: Physik der kalten Gase Robin Wanke BCS-BEC Crossover Hauptseminar: Physik der kalten Gase Robin Wanke Outline Motivation Cold fermions BCS-Theory Gap equation Feshbach resonance Pairing BEC of molecules BCS-BEC-crossover Conclusion 2 Motivation

More information

Philipp T. Ernst, Sören Götze, Jannes Heinze, Jasper Krauser, Christoph Becker & Klaus Sengstock. Project within FerMix collaboration

Philipp T. Ernst, Sören Götze, Jannes Heinze, Jasper Krauser, Christoph Becker & Klaus Sengstock. Project within FerMix collaboration Analysis ofbose Bose-Fermi Mixturesin in Optical Lattices Philipp T. Ernst, Sören Götze, Jannes Heinze, Jasper Krauser, Christoph Becker & Klaus Sengstock Project within FerMix collaboration Motivation

More information

Evidence for Efimov Quantum states

Evidence for Efimov Quantum states KITP, UCSB, 27.04.2007 Evidence for Efimov Quantum states in Experiments with Ultracold Cesium Atoms Hanns-Christoph Nägerl bm:bwk University of Innsbruck TMR network Cold Molecules ultracold.atoms Innsbruck

More information

A Chromium BEC in strong RF fields

A Chromium BEC in strong RF fields Laboratoire de Physique des Lasers Université Paris Nord Villetaneuse - France A Chromium BEC in strong RF fields Benjamin Pasquiou, Gabriel Bismut, Paolo Pedri, Bruno Laburthe- Tolra, Etienne Maréchal,

More information

ROTONS AND STRIPES IN SPIN-ORBIT COUPLED BECs

ROTONS AND STRIPES IN SPIN-ORBIT COUPLED BECs INT Seattle 5 March 5 ROTONS AND STRIPES IN SPIN-ORBIT COUPLED BECs Yun Li, Giovanni Martone, Lev Pitaevskii and Sandro Stringari University of Trento CNR-INO Now in Swinburne Now in Bari Stimulating discussions

More information

Ytterbium quantum gases in Florence

Ytterbium quantum gases in Florence Ytterbium quantum gases in Florence Leonardo Fallani University of Florence & LENS Credits Marco Mancini Giacomo Cappellini Guido Pagano Florian Schäfer Jacopo Catani Leonardo Fallani Massimo Inguscio

More information

SYNTHETIC GAUGE FIELDS IN ULTRACOLD ATOMIC GASES

SYNTHETIC GAUGE FIELDS IN ULTRACOLD ATOMIC GASES Congresso Nazionale della Società Italiana di Fisica Università della Calabria 17/21 Settembre 2018 SYNTHETIC GAUGE FIELDS IN ULTRACOLD ATOMIC GASES Sandro Stringari Università di Trento CNR-INO - Bose-Einstein

More information

Dipolar Fermi gases. Gora Shlyapnikov LPTMS, Orsay, France University of Amsterdam. Outline

Dipolar Fermi gases. Gora Shlyapnikov LPTMS, Orsay, France University of Amsterdam. Outline Dipolar Fermi gases Introduction, Gora Shlyapnikov LPTMS, Orsay, France University of Amsterdam Outline Experiments with magnetic atoms and polar molecules Topologcal p x +ip y phase in 2D Bilayer systems

More information

The phases of matter familiar for us from everyday life are: solid, liquid, gas and plasma (e.f. flames of fire). There are, however, many other

The phases of matter familiar for us from everyday life are: solid, liquid, gas and plasma (e.f. flames of fire). There are, however, many other 1 The phases of matter familiar for us from everyday life are: solid, liquid, gas and plasma (e.f. flames of fire). There are, however, many other phases of matter that have been experimentally observed,

More information

Introduction to Bose-Einstein condensation 4. STRONGLY INTERACTING ATOMIC FERMI GASES

Introduction to Bose-Einstein condensation 4. STRONGLY INTERACTING ATOMIC FERMI GASES 1 INTERNATIONAL SCHOOL OF PHYSICS "ENRICO FERMI" Varenna, July 1st - July 11 th 2008 " QUANTUM COHERENCE IN SOLID STATE SYSTEMS " Introduction to Bose-Einstein condensation 4. STRONGLY INTERACTING ATOMIC

More information

Numerical simulation of the dynamics of the rotating dipolar Bose-Einstein condensates

Numerical simulation of the dynamics of the rotating dipolar Bose-Einstein condensates Numerical simulation of the dynamics of the rotating dipolar Bose-Einstein condensates Qinglin TANG Inria, University of Lorraine Joint work with: Prof. Weizhu BAO, Daniel MARAHRENS, Yanzhi ZHANG and Yong

More information

Ultra-cold gases. Alessio Recati. CNR INFM BEC Center/ Dip. Fisica, Univ. di Trento (I) & Dep. Physik, TUM (D) TRENTO

Ultra-cold gases. Alessio Recati. CNR INFM BEC Center/ Dip. Fisica, Univ. di Trento (I) & Dep. Physik, TUM (D) TRENTO Ultra-cold gases Alessio Recati CNR INFM BEC Center/ Dip. Fisica, Univ. di Trento (I) & Dep. Physik, TUM (D) TRENTO Lectures L. 1) Introduction to ultracold gases Bosonic atoms: - From weak to strong interacting

More information

Harvard University Physics 284 Spring 2018 Strongly correlated systems in atomic and condensed matter physics

Harvard University Physics 284 Spring 2018 Strongly correlated systems in atomic and condensed matter physics 1 Harvard University Physics 284 Spring 2018 Strongly correlated systems in atomic and condensed matter physics Instructor Eugene Demler Office: Lyman 322 Email: demler@physics.harvard.edu Teaching Fellow

More information

arxiv: v1 [cond-mat.quant-gas] 29 Dec 2010

arxiv: v1 [cond-mat.quant-gas] 29 Dec 2010 Emergent structure in a dipolar Bose gas in a one-dimensional lattice Ryan M. Wilson and John L. Bohn JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA (Dated: December

More information

Second sound and the superfluid fraction in a resonantly interacting Fermi gas

Second sound and the superfluid fraction in a resonantly interacting Fermi gas Second sound and the superfluid fraction in a resonantly interacting Fermi gas Meng Khoon Tey Tsinghua University China Workshop on Probing and Understanding Exotic Superconductors and Superfluids Trieste,

More information

Bose-Einstein condensation of lithium molecules and studies of a strongly interacting Fermi gas

Bose-Einstein condensation of lithium molecules and studies of a strongly interacting Fermi gas Bose-Einstein condensation of lithium molecules and studies of a strongly interacting Fermi gas Wolfgang Ketterle Massachusetts Institute of Technology MIT-Harvard Center for Ultracold Atoms 3/4/04 Workshop

More information

Ultracold molecules - a new frontier for quantum & chemical physics

Ultracold molecules - a new frontier for quantum & chemical physics Ultracold molecules - a new frontier for quantum & chemical physics Debbie Jin Jun Ye JILA, NIST & CU, Boulder University of Virginia April 24, 2015 NIST, NSF, AFOSR, ARO Ultracold atomic matter Precise

More information

Numerical Simulations of Faraday Waves in Binary Bose-Einstein Condensates

Numerical Simulations of Faraday Waves in Binary Bose-Einstein Condensates Numerical Simulations of Faraday Waves in Binary Bose-Einstein Condensates Antun Balaž 1 and Alexandru Nicolin 2 1 Scientific Computing Laboratory, Institute of Physics Belgrade, University of Belgrade,

More information

Ultracold Fermi Gases with unbalanced spin populations

Ultracold Fermi Gases with unbalanced spin populations 7 Li Bose-Einstein Condensate 6 Li Fermi sea Ultracold Fermi Gases with unbalanced spin populations Nir Navon Fermix 2009 Meeting Trento, Italy 3 June 2009 Outline Introduction Concepts in imbalanced Fermi

More information

Workshop on Topics in Quantum Turbulence March Experiments on Bose Condensates

Workshop on Topics in Quantum Turbulence March Experiments on Bose Condensates 2023-24 Workshop on Topics in Quantum Turbulence 16-20 March 2009 Experiments on Bose Condensates K. Helmerson National Institute of Standards and Technology Gaithersburg U.S.A. Atomic gas Bose-Einstein

More information

Why ultracold molecules?

Why ultracold molecules? Cold & ultracold molecules new frontiers J. Ye, JILA Michigan Quantum Summer School, Ann Arbor, June 18, 2008 Quantum dipolar gas Precision test QED ee- eehco OH H2O H2CO Quantum measurement Chemical reactions

More information

NanoKelvin Quantum Engineering

NanoKelvin Quantum Engineering NanoKelvin Quantum Engineering Few x 10 5 Yb atoms 250mm 400 nk 250 nk < 200 nk Control of atomic c.m. position and momentum. Today: Bose-Fermi double superfluid Precision BEC interferometry Ultracold

More information

A Mixture of Bose and Fermi Superfluids. C. Salomon

A Mixture of Bose and Fermi Superfluids. C. Salomon A Mixture of Bose and Fermi Superfluids C. Salomon INT workshop Frontiers in quantum simulation with cold atoms University of Washington, April 2, 2015 The ENS Fermi Gas Team F. Chevy, Y. Castin, F. Werner,

More information

(Noise) correlations in optical lattices

(Noise) correlations in optical lattices (Noise) correlations in optical lattices Dries van Oosten WA QUANTUM http://www.quantum.physik.uni mainz.de/bec The Teams The Fermions: Christoph Clausen Thorsten Best Ulrich Schneider Sebastian Will Lucia

More information

Fermi-Bose mixtures of 40 K and 87 Rb atoms: Does a Bose Einstein condensate float in a Fermi sea?"

Fermi-Bose mixtures of 40 K and 87 Rb atoms: Does a Bose Einstein condensate float in a Fermi sea? Krynica, June 2005 Quantum Optics VI Fermi-Bose mixtures of 40 K and 87 Rb atoms: Does a Bose Einstein condensate float in a Fermi sea?" Mixtures of ultracold Bose- and Fermi-gases Bright Fermi-Bose solitons

More information

SUPERFLUIDTY IN ULTRACOLD ATOMIC GASES

SUPERFLUIDTY IN ULTRACOLD ATOMIC GASES College de France, May 14, 2013 SUPERFLUIDTY IN ULTRACOLD ATOMIC GASES Sandro Stringari Università di Trento CNR-INFM PLAN OF THE LECTURES Lecture 1. Superfluidity in ultra cold atomic gases: examples

More information

Universal Aspects of Dipolar Scattering Christopher Ticknor. May 15 at INT UNCLASSIFIED

Universal Aspects of Dipolar Scattering Christopher Ticknor. May 15 at INT UNCLASSIFIED Universal Aspects of Dipolar Scattering Christopher Ticknor May 15 at INT 1 Outline of Talk Universal Dipolar Scattering Theory of a long range scattering potential D Universal and tilted dipolar scattering

More information

Cold atoms. 1: Bose-Einstein Condensation. Emil Lundh. April 13, Department of Physics Umeå University

Cold atoms. 1: Bose-Einstein Condensation. Emil Lundh. April 13, Department of Physics Umeå University 1: Bose-Einstein Condensation Department of Physics Umeå University lundh@tp.umu.se April 13, 2011 Umeå 114 000 inhabitants Average age 37.9 years Cultural capital of Europe 2014 400 km ski tracks 180

More information

Design and realization of exotic quantum phases in atomic gases

Design and realization of exotic quantum phases in atomic gases Design and realization of exotic quantum phases in atomic gases H.P. Büchler and P. Zoller Theoretische Physik, Universität Innsbruck, Austria Institut für Quantenoptik und Quanteninformation der Österreichischen

More information

Superfluidity in interacting Fermi gases

Superfluidity in interacting Fermi gases Superfluidity in interacting Fermi gases Quantum many-body system in attractive interaction Molecular condensate BEC Cooper pairs BCS Thomas Bourdel, J. Cubizolles, L. Khaykovich, J. Zhang, S. Kokkelmans,

More information

Dipolar quantum gases Barcelona, May 2010

Dipolar quantum gases Barcelona, May 2010 Barcelona, May D DQG Quasi-D DQG Institut für Theoretische Physik, Johannes Kepler Universität, Linz, Austria May, Outline D DQG Quasi-D DQG : D polarization polarization : Slabs : weakly/unpolarized dipoles

More information

Low-dimensional Bose gases Part 1: BEC and interactions

Low-dimensional Bose gases Part 1: BEC and interactions Low-dimensional Bose gases Part 1: BEC and interactions Hélène Perrin Laboratoire de physique des lasers, CNRS-Université Paris Nord Photonic, Atomic and Solid State Quantum Systems Vienna, 2009 Introduction

More information

Lecture 3. Bose-Einstein condensation Ultracold molecules

Lecture 3. Bose-Einstein condensation Ultracold molecules Lecture 3 Bose-Einstein condensation Ultracold molecules 66 Bose-Einstein condensation Bose 1924, Einstein 1925: macroscopic occupation of the lowest energy level db h 2 mk De Broglie wavelength d 1/3

More information

Cold Quantum Gas Group Hamburg

Cold Quantum Gas Group Hamburg Cold Quantum Gas Group Hamburg Fermi-Bose-Mixture BEC in Space Spinor-BEC Atom-Guiding in PBF Fermi Bose Mixture Project Quantum Degenerate Fermi-Bose Mixtures of 40K/87Rb at Hamburg: since 5/03 Special

More information

Introduction to cold atoms and Bose-Einstein condensation (II)

Introduction to cold atoms and Bose-Einstein condensation (II) Introduction to cold atoms and Bose-Einstein condensation (II) Wolfgang Ketterle Massachusetts Institute of Technology MIT-Harvard Center for Ultracold Atoms 7/7/04 Boulder Summer School * 1925 History

More information

Superfluidity of a 2D Bose gas (arxiv: v1)

Superfluidity of a 2D Bose gas (arxiv: v1) Superfluidity of a 2D Bose gas (arxiv:1205.4536v1) Christof Weitenberg, Rémi Desbuquois, Lauriane Chomaz, Tarik Yefsah, Julian Leonard, Jérôme Beugnon, Jean Dalibard Trieste 18.07.2012 Phase transitions

More information

Magnetic phenomena in a spin-1 quantum gas. Dan Stamper-Kurn UC Berkeley, Physics Lawrence Berkeley National Laboratory, Materials Sciences

Magnetic phenomena in a spin-1 quantum gas. Dan Stamper-Kurn UC Berkeley, Physics Lawrence Berkeley National Laboratory, Materials Sciences Magnetic phenomena in a spin-1 quantum gas Dan Stamper-Kurn UC Berkeley, Physics Lawrence Berkeley National Laboratory, Materials Sciences Spinor gases 37 electrons J = 1/2 Energy F=2 Optically trapped

More information

Reference for most of this talk:

Reference for most of this talk: Cold fermions Reference for most of this talk: W. Ketterle and M. W. Zwierlein: Making, probing and understanding ultracold Fermi gases. in Ultracold Fermi Gases, Proceedings of the International School

More information

Bose-Einstein Condensate: A New state of matter

Bose-Einstein Condensate: A New state of matter Bose-Einstein Condensate: A New state of matter KISHORE T. KAPALE June 24, 2003 BOSE-EINSTEIN CONDENSATE: A NEW STATE OF MATTER 1 Outline Introductory Concepts Bosons and Fermions Classical and Quantum

More information

Vortex solitons in dipolar Bose-Einstein condensates

Vortex solitons in dipolar Bose-Einstein condensates Vortex solitons in dipolar Bose-Einstein condensates I. Tikhonenkov, B. A. Malomed, 2 and A. Vardi Department of Chemistry, Ben-Gurion University of the Negev, P. O. Box 653, Beer-Sheva 8405, Israel 2

More information

INO-CNR BEC Center

INO-CNR BEC Center Experiments @ INO-CNR BEC Center The INO-CNR team: CNR Researchers: PostDocs: Tom Bienaimé Giacomo Lamporesi, Gabriele Ferrari PhD students: Simone Serafini (INO), Eleonora Fava, Giacomo Colzi, Carmelo

More information

5. Gross-Pitaevskii theory

5. Gross-Pitaevskii theory 5. Gross-Pitaevskii theory Outline N noninteracting bosons N interacting bosons, many-body Hamiltonien Mean-field approximation, order parameter Gross-Pitaevskii equation Collapse for attractive interaction

More information

Quantum Gases. Subhadeep Gupta. UW REU Seminar, 11 July 2011

Quantum Gases. Subhadeep Gupta. UW REU Seminar, 11 July 2011 Quantum Gases Subhadeep Gupta UW REU Seminar, 11 July 2011 Ultracold Atoms, Mixtures, and Molecules Subhadeep Gupta UW REU Seminar, 11 July 2011 Ultracold Atoms High sensitivity (large signal to noise,

More information

Strongly Correlated Systems of Cold Atoms Detection of many-body quantum phases by measuring correlation functions

Strongly Correlated Systems of Cold Atoms Detection of many-body quantum phases by measuring correlation functions Strongly Correlated Systems of Cold Atoms Detection of many-body quantum phases by measuring correlation functions Anatoli Polkovnikov Boston University Ehud Altman Weizmann Vladimir Gritsev Harvard Mikhail

More information

Cold fermions, Feshbach resonance, and molecular condensates (II)

Cold fermions, Feshbach resonance, and molecular condensates (II) Cold fermions, Feshbach resonance, and molecular condensates (II) D. Jin JILA, NIST and the University of Colorado I. Cold fermions II. III. Feshbach resonance BCS-BEC crossover (Experiments at JILA) $$

More information

Cold Atomic Gases. California Condensed Matter Theory Meeting UC Riverside November 2, 2008

Cold Atomic Gases. California Condensed Matter Theory Meeting UC Riverside November 2, 2008 New Physics with Interacting Cold Atomic Gases California Condensed Matter Theory Meeting UC Riverside November 2, 2008 Ryan Barnett Caltech Collaborators: H.P. Buchler, E. Chen, E. Demler, J. Moore, S.

More information

Workshop on Coherent Phenomena in Disordered Optical Systems May 2014

Workshop on Coherent Phenomena in Disordered Optical Systems May 2014 2583-12 Workshop on Coherent Phenomena in Disordered Optical Systems 26-30 May 2014 Nonlinear Excitations of Bose-Einstein Condensates with Higherorder Interaction Etienne WAMBA University of Yaounde and

More information

Zero Sound in Dipolar Fermi Gases. Abstract

Zero Sound in Dipolar Fermi Gases. Abstract Zero Sound in Dipolar Fermi Gases Shai Ronen and John L. Bohn JILA and Department of Physics, University of Colorado, Boulder, Colorado, USA arxiv:0906.3753v2 [cond-mat.quant-gas] 22 Nov 2009 (Dated: November

More information

High-Temperature Superfluidity

High-Temperature Superfluidity High-Temperature Superfluidity Tomoki Ozawa December 10, 2007 Abstract With the recent advancement of the technique of cooling atomic gases, it is now possible to make fermionic atom gases into superfluid

More information

The heteronuclear Efimov scenario in an ultracold Bose-Fermi mixture

The heteronuclear Efimov scenario in an ultracold Bose-Fermi mixture The heteronuclear Efimov scenario in an ultracold Bose-Fermi mixture Juris Ulmanis, Stephan Häfner, Rico Pires, Eva Kuhnle, and Matthias Weidemüller http://physi.uni-heidelberg.de/forschung/qd RUPRECHT-KARLS-

More information

The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs

The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs RHI seminar Pascal Büscher i ( t Φ (r, t) = 2 2 ) 2m + V ext(r) + g Φ (r, t) 2 Φ (r, t) 27 Nov 2008 RHI seminar Pascal Büscher 1 (Stamper-Kurn

More information

The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs

The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs The Gross-Pitaevskii Equation and the Hydrodynamic Expansion of BECs i ( ) t Φ (r, t) = 2 2 2m + V ext(r) + g Φ (r, t) 2 Φ (r, t) (Mewes et al., 1996) 26/11/2009 Stefano Carignano 1 Contents 1 Introduction

More information

Fundamentals and New Frontiers of Bose Einstein Condensation

Fundamentals and New Frontiers of Bose Einstein Condensation Contents Preface v 1. Fundamentals of Bose Einstein Condensation 1 1.1 Indistinguishability of Identical Particles.......... 1 1.2 Ideal Bose Gas in a Uniform System............ 3 1.3 Off-Diagonal Long-Range

More information

Large Spin (quantum) Magnetism

Large Spin (quantum) Magnetism Large Spin (quantum) Magnetism B. Laburthe-Tolra Emphasis of this talk: - Introduction to the field and good proposals - Beyond mean-field effects Chromium dipolar gases - and Strontium project B. Naylor

More information

Vortices and other topological defects in ultracold atomic gases

Vortices and other topological defects in ultracold atomic gases Vortices and other topological defects in ultracold atomic gases Michikazu Kobayashi (Kyoto Univ.) 1. Introduction of topological defects in ultracold atoms 2. Kosterlitz-Thouless transition in spinor

More information

Few-Body physics with ultracold K and Rb: Efimov physics and the Bose polaron

Few-Body physics with ultracold K and Rb: Efimov physics and the Bose polaron Few-Body physics with ultracold K and Rb: Efimov physics and the Bose polaron 1 Dual species quantum gases with tunable interactions mixing vs. phase separation Polarons beyond mean field LHY droplets

More information

YbRb A Candidate for an Ultracold Paramagnetic Molecule

YbRb A Candidate for an Ultracold Paramagnetic Molecule YbRb A Candidate for an Ultracold Paramagnetic Molecule Axel Görlitz Heinrich-Heine-Universität Düsseldorf Santa Barbara, 26 th February 2013 Outline 1. Introduction: The Yb-Rb system 2. Yb + Rb: Interactions

More information

Vortices in Bose-Einstein condensates. Ionut Danaila

Vortices in Bose-Einstein condensates. Ionut Danaila Vortices in Bose-Einstein condensates 3D numerical simulations Ionut Danaila Laboratoire Jacques Louis Lions Université Pierre et Marie Curie (Paris 6) http://www.ann.jussieu.fr/ danaila October 16, 2008

More information

Experiments with an Ultracold Three-Component Fermi Gas

Experiments with an Ultracold Three-Component Fermi Gas Experiments with an Ultracold Three-Component Fermi Gas The Pennsylvania State University Ken O Hara Jason Williams Eric Hazlett Ronald Stites John Huckans Overview New Physics with Three Component Fermi

More information

Drag force and superfluidity in the supersolid striped phase of a spin-orbit-coupled Bose gas

Drag force and superfluidity in the supersolid striped phase of a spin-orbit-coupled Bose gas / 6 Drag force and superfluidity in the supersolid striped phase of a spin-orbit-coupled Bose gas Giovanni Italo Martone with G. V. Shlyapnikov Worhshop on Exploring Nuclear Physics with Ultracold Atoms

More information

Modeling, Analysis and Simulation for Degenerate Dipolar Quantum Gas

Modeling, Analysis and Simulation for Degenerate Dipolar Quantum Gas Modeling, Analysis and Simulation for Degenerate Dipolar Quantum Gas Weizhu Bao Department of Mathematics National University of Singapore Email: matbaowz@nus.edu.sg URL: http://www.math.nus.edu.sg/~bao

More information

We can then linearize the Heisenberg equation for in the small quantity obtaining a set of linear coupled equations for and :

We can then linearize the Heisenberg equation for in the small quantity obtaining a set of linear coupled equations for and : Wednesday, April 23, 2014 9:37 PM Excitations in a Bose condensate So far: basic understanding of the ground state wavefunction for a Bose-Einstein condensate; We need to know: elementary excitations in

More information

Lecture I: (magnetic) dipolar gases. Lecture II: Rydberg Rydberg interaction. Lecture III : Rydberg ground state interaction

Lecture I: (magnetic) dipolar gases. Lecture II: Rydberg Rydberg interaction. Lecture III : Rydberg ground state interaction Lecture I: (magnetic) dipolar gases Lecture II: Rydberg Rydberg interaction Lecture III : Rydberg ground state interaction Rydberg atoms - Size quan%ty scaling 100S- state of 87 Rb radius n² ~ 1 µm 0.35

More information

Spinor Bose gases lecture outline

Spinor Bose gases lecture outline Spinor Bose gases lecture outline 1. Basic properties 2. Magnetic order of spinor Bose-Einstein condensates 3. Imaging spin textures 4. Spin-mixing dynamics 5. Magnetic excitations We re here Coupling

More information

6. Interference of BECs

6. Interference of BECs 6. Interference of BECs Josephson effects Weak link: tunnel junction between two traps. Josephson oscillation An initial imbalance between the population of the double well potential leads to periodic

More information

Spontaneous topological defects in the formation of a Bose-Einstein condensate

Spontaneous topological defects in the formation of a Bose-Einstein condensate Spontaneous topological defects in the formation of a Bose-Einstein condensate Matthew Davis 1, Ashton Bradley 1,, Geoff Lee 1, Brian Anderson 2 1 ARC Centre of Excellence for Quantum-Atom Optics, University

More information

Revolution in Physics. What is the second quantum revolution? Think different from Particle-Wave Duality

Revolution in Physics. What is the second quantum revolution? Think different from Particle-Wave Duality PHYS 34 Modern Physics Ultracold Atoms and Trappe Ions Today and Mar.3 Contents: a) Revolution in physics nd Quantum revolution b) Quantum simulation, measurement, and information c) Atomic ensemble and

More information

Dynamical Condensation of ExcitonPolaritons

Dynamical Condensation of ExcitonPolaritons ICSCE 2008 Dynamical Condensation of ExcitonPolaritons Y. Yamamoto, H. Deng, G. Weihs, C.W. Lai, G. Roumpos and S. Utsunomiya Stanford University and National Institute of Informatics Loeffler, S. Hoefling,

More information

Non-Equilibrium Physics with Quantum Gases

Non-Equilibrium Physics with Quantum Gases Non-Equilibrium Physics with Quantum Gases David Weiss Yang Wang Laura Adams Cheng Tang Lin Xia Aishwarya Kumar Josh Wilson Teng Zhang Tsung-Yao Wu Neel Malvania NSF, ARO, DARPA, Outline Intro: cold atoms

More information

What are we going to talk about: BEC and Nonlinear Atom Optics

What are we going to talk about: BEC and Nonlinear Atom Optics What are we going to talk about: BEC and Nonlinear Atom Optics Nobel Prize Winners E. A. Cornell 1961JILA and NIST Boulder, Co, USA W. Ketterle C. E. Wieman 19571951MIT, JILA and UC, Cambridge.M Boulder,

More information

been succeeded in 1997 Rb, 23 Na, 7 Li, 1 H, 85 Rb, 41 K, 4 He, 133 Cs, 174 Yb, 52 Cr, 40 Ca, 84 Sr, 164 Dy Laser cooling Trap of atoms 87

been succeeded in 1997 Rb, 23 Na, 7 Li, 1 H, 85 Rb, 41 K, 4 He, 133 Cs, 174 Yb, 52 Cr, 40 Ca, 84 Sr, 164 Dy Laser cooling Trap of atoms 87 Non-Abelian Vortices and Their Non-equilibrium Michikazu Kobayashi a University of Tokyo November 18th, 2011 at Keio University 2 nd Workshop on Quarks and Hadrons under Extreme Conditions - Lattice QCD,

More information

Solitons in atomic condensates, with optical lattices and field-induced dipole moments

Solitons in atomic condensates, with optical lattices and field-induced dipole moments Solitons in atomic condensates, with optical lattices and field-induced dipole moments Lauro Tomio 1,2, H F da Luz 1, A Gammal 3 and F Kh Abdullaev 4 1 Centro de Ciências aturais e Humanas (CCH), Universidade

More information

arxiv: v1 [cond-mat.quant-gas] 29 May 2012

arxiv: v1 [cond-mat.quant-gas] 29 May 2012 Anisotropic excitation spectrum of a dipolar quantum Bose gas G. Bismut, B. Laburthe-Tolra, E. Maréchal, P. Pedri, O. Gorceix and L. Vernac Laboratoire de Physique des Lasers, UMR 7538 CNRS, Université

More information

---emulating dynamics and fluctuations in superfluids and nuclear matter?

---emulating dynamics and fluctuations in superfluids and nuclear matter? Brookhaven National Laboratory May 23, 2008 Expanding Atomic Quantum Gases with tunable interaction and disorder ---emulating dynamics and fluctuations in superfluids and nuclear matter? Yong P. Chen Quantum

More information

COPYRIGHTED MATERIAL. Index

COPYRIGHTED MATERIAL. Index 347 Index a AC fields 81 119 electric 81, 109 116 laser 81, 136 magnetic 112 microwave 107 109 AC field traps see Traps AC Stark effect 82, 84, 90, 96, 97 101, 104 109 Adiabatic approximation 3, 10, 32

More information

Magnetic relaxation in dysprosium-dysprosium collisions

Magnetic relaxation in dysprosium-dysprosium collisions Magnetic relaxation in dysprosium-dysprosium collisions Bonna K. Newman, 1, 3 Nathan Brahms, 2, 3 Yat Shan Au, 2, 3 Cort Johnson, 1, 3 Colin B. Connolly, 2, 3 John M. Doyle, 2, 3 Daniel Kleppner, 1, 3

More information