Gyroscopes IN GEneral Relativity
|
|
- Maud Moore
- 6 years ago
- Views:
Transcription
1 , Pisa Gyroscopes IN GEneral Relativity Jacopo Belf Istituto Nazionale di Fisica Nucleare, Pisa Congresso Nazionale SIF 2014, Pisa.
2 The collaboration J. Belfi, F. Bosi, G. Cella, R. Santagata, A. Di Virgilio INFN Sez. di Pisa, Pisa, Italy A.Ortolan Laboratori Nazionali di Legnaro, INFN Legnaro (Padova), Italy A. Porzio and S. Solimeno University of Naples and CNR-SPIN, Naples, Italy A. Beghi, D. Cuccato, A. Donazzan, G. Naletto, M. Pellizzo University of Padova, Italy G. Saccorotti INGV sez. di Pisa, Italy N. Beverini, B. Bouhadef, M. Calamai, G. Carelli, E. Maccioni University of Pisa and CNISM, Pisa, Italy M. L. Ruggiero and A. Tartaglia Polit. of Torino and INFN, Torino, Italy K. U. Schreiber and A. Gebauer Technische Universitaet Muenchen, Forschungseinrichtung Satellitengeodaesie Fundamentalstation Wettzell, Bad Koetzting, Germany J-P. R. Wells, R Hurst Department of Physics and Astronomy, University of Canterbury, New Zealand Congresso Nazionale SIF 2014, Pisa
3 Outline GINGER experiment Ideas, motivations and requirements Ring Laser Gyroscopes Sagnac effect State of the art Experimental Activity Earth's rotation measurements Sensor model and noise fltering Interferometric control of the cavity geometry Outlook and conclusion Congresso Nazionale SIF 2014, Pisa
4 Rotations in GR The axis of a gyroscope will precess following the curvature of the local space-time due to: Earth's Mass (Geodetic precession) and Earth's Rotation (Lense-Thirring or Frame Dragging) Space-Test LAGEOS+GRACE ( ): Dragging 10% GRAVITY PROBE B ( ): Geodetic 0.28% Dragging 19% LARES (2012-) expected 1-2% on Frame Dragging On ground δ Ω GM G ^ Ω sin θ e + J Ω E [ j^e 3( j^e u^r ) e^r ] θ E E c R c R Ω E Congresso Nazionale SIF 2014, Pisa Ω E
5 GINGER (Gyroscopes In General Relativity) Testing GR with a very accurate measurement of Earth's rotation rate F. Bosi et al., Phys. Rev. D 84, (2011) Quasars 1: from IERS (International Earth Rotation and Reference System Service) system (inertial reference frame) 2: from an ultra sensitive Gyroscopes array based underground (dragged reference frame) Inertial-frame Ω E rotation measurement 3-axial Ring-Laser rotation Ω E ' Local measurement
6 GINGER (Gyroscopes In General Relativity) Motivations In space the observer is in geodetic motion (free fall) In a ground laboratory the observer is in a non inertial motion Quasars Metric is tested on different length scales (planetary meter-scale) Absolutely different interpretation, no need of gravitational feld not necessary Multidisciplinarity (Geodesy, Geophysics) 3-axial Ring-Laser
7 Sagnac Interferometers Sagnac effect ω Ω ΔL 4A Δ t Sagnac= 2 Ω n c Advantages No moving masses No signal for a linearly accelerating reference-frame L > 1 m Earth rotation is the bias! Resonant cavity Ω 4A Δ f Sagnac = Ω n Pλ Quantum limit c P h νt δω shot = 4 AQ 2P out t ( Low cavity losses High power Large size Congresso Nazionale SIF 2014, Pisa 1 /2 )
8 State of the art: the G ring laser Wettzell observatory (GE) GEODESY Days Diurnal (Oppolzer) K.U.Schreiber, et al., J. Geophys. Res.. 109, B06405 (2004) Annual (circular)+chandler (elliptical) Wobble T=432 s.d. K.U.Schreiber, et al., PRL. 107, (2011)
9 GINGER key-points How to do better than G-Wettzel? Use a tri-axial gyro, no absolute orientation is required. Measure the vector modulus. Δf i= 4 Ai P i λi n^ i +syst. Ω δ Ω Ω E Geometry of the ring must be controlled actively (optical frequency references) Local ground rotational noise must be low (underground lab.) Minimize laser dynamics non-reciprocal effects (L>6m)+modeling Calibration procedure w.r.t. local space-time (external metrology) Congresso Nazionale SIF 2014, Pisa
10 G-Pisa Ring Laser Δ f s =K R (1+K A )Ω+Δ f 0 +Δ f bs [Hz] A. Velikoseltsev, PhD thesis (2005) J. Belf et al., Applied Physics B, 106(2): (2012) [Hours]
11 Ring laser hacking Sagnac A. Beghi et al. Applied Optics 51, 31 (2012) I1 b c rb I2 rc ra P( E1,2 ) rd d a Active medium He+20Ne+22Ne 2 2i μ (3) (2) ab P ( E 1,2 )= γ χ (v )ρ (v, E 1,2) dv 1,2 ab Opposite beams dynamics I 1=α1 I 1 β I 21 θ2 I 2 I 1 +r 2 I 1 I 2 cos( ψ ϵ2 ), I 2=α 2 I 2 β I 22 θ1 I 2 I 1 +r 1 I 1 I 2 cos(ψ+ϵ2 ), ψ =ω s + τ 1 I 1 τ 2 I 2 r 2 I2 I1 sin (ψ ϵ2 ) r 1 sin( ψ+ ϵ1 ) I1 I2
12 Study of systematics Max signal orientation: fs=155.5 Hz Observables 2 S (t)= a1 E1 (t )+a2 E 2 (t) 2 V 1 (t )= b1 E1 (t)+c 21 E 2 (t ) V 2 (t)= b2 E 2 (t )+c 12 E 1 (t)2 Calibration parameters INF S. P N lab i iero n ag rad o, P isa Congresso Nazionale SIF 2014, Pisa ξ1,2 : Optical detunings p : Gas pressure T Ne : Atomic temperature k 20,22 : Isotopic ratio μ 1,2 : cavity total losses G : single pass gain
13 Kalman filter on real data G-Pi s a sh ot n o ise Allan DEV of AR2 (upper curve) and EKF (lower curve) rotational frequency estimates. The straight line represents the shot noise level of G-PISA D. Cuccato et al. Metrologia 51, 97, (2014) Congresso Nazionale SIF 2014, Pisa Histograms of the estimates of AR2 (pale gray) and EKF (dark gray) during 2 days of G-PISA data. Red line: is the expected Sagnac frequency due to Earth rotation, Dotted lines represent its residual uncertainty bounds due to geometric and orientation tolerances.
14 GINGER geometry problem Tri-axial measurement of the Earth rotation down to LT implies: f Si = 4 Ai P i λi n^ i +syst. Ω S δ f i 10 <10 f i Systematics are strongly diluted if L>4 m Sensor stability limited by Geometrical stability Octahedral shape Rigidity can be obtained by locking internal degrees of freedom: 3 diagonals + 4 cavity perimeters Congresso Nazionale SIF 2014, Pisa
15 Single ring geometry controllability Scope: Adjust the beam path to the regular square shape 12 degrees of freedom -6 d.of. (Rigid body) = 6 d.of. (Cavity deformation) The only linear contribution to the perimeter length comes from E1 Strategy Block the diagonal cavity lengths to the same value (FP intrf.) [(E1,E5), E2] Optimize the residual 4 quadratic d.o.f. [E3(-), E4(-), E5(+), E6(+)] at the saddle point for the perimeter E1 E2 E3 E4 E1 E3 E5 E5 E2 E4 E6
16 Diagonal cavities length control: GP2 RLG Basic Idea Inject the 2 Fabry Pérot cavities with an external laser Measure the 2 absolute lengths Set them equal by controlling mirrors positions GP2 (r1,t1) (r2,t2) L Einc Etrans Eref R1 R2 Use a single laser for both the two cavities f n= c [n+ Ψ R +Φn ] 2L L 1 Ψ R =2 cos (1 ) r Φn =dielectric phase shift π 1) Lock the cavities to the laser (Pound-Drever-Hall) (set optical resonance frequency) 2) Measure the FSR (tuning FM side-bands to a multiple m of FSR) δ FSR Congresso Nazionale SIF 2014, Pisa 1 m
17 Diagonals interrogation scheme {[ Ei (t )=E 0 exp i ω 0 t +α sin ( ω A t ) +β sin ( ω B t +Δ sin ( ω C t ) ) ]} ω0 474 THz (optical frequency) ω A 10 MHz (carrier lock modulation) ω B m FSR 1 GHz (sidebands res.) ωc 10 khz (lock-in detection mod.) EOM fsb Laser He-Ne-Iodine Reference Laser: Stability (t=100 s) P.D. α sin ( ω A t ) F.P. B.S. ωa + S carrier ωc β sin ( ω B t + γ sin ( ω C t ) ) S side
18 Optical-bench test Cavity lock error signal Sideband lock error signal
19 Closed loop performances Residual displacement noise Cavity 1 Cavity 2 Correction signals Blue line: cavity 1, red line: cavity 2. Thick trace: temperature of the lab.
20 Absolute length unbalance The two contributions from Gouy's phase and dielectric shift cancel out for equal mirrors and nd should be an integer number Frequency countings for the FSR estimation (70 min each) The estimated mean value of the mode number difference is nd = ± 1.6 Accuracy on the length difference δd = (λ/2) δnd 500nm. (Accepted for publication in CQG) Expected improvements Higher fnesse, Controlled environment, Lower noise in the electronics
21 Conclusion GINGER aims at a fully complementary test of the Earth's Frame Dragging. Key points 6m in side-length Tri-axial Active stabilization Experimental results Control of laser dynamics Study of the non-linearities (numerical model) EKF approach 10-fold increase in accuracy and stability of G-Pisa data Control geometrical scale factor (Test bench for diagonals locking) Development of the laser source, Stable lock to the carrier (10-11), Accuracy on the length difference of 500 nm Next Installation of GINGER-ino (L=3.6 m) in G-Sasso Underground Lab, Application of the geometry control to GP2 (L=1.6 m) in Pisa
Using Ring Laser Systems to Measure Gravitomagnetic Effects on Earth
Using Ring Laser Systems to Measure Gravitomagnetic Effects on Earth Matteo Luca Ruggiero 1 1 RELGRAV @ Politecnico di Torino, INFN Sezione di Torino GREAT-ES Workshop, Porto ML Ruggiero (RELGRAV@PoliTo,
More informationHigh-Accuracy Ring Laser Gyroscopes: Earth Rotation Rate and Relativistic Effects
Journal of Physics: Conference Series PAPER OPEN ACCESS High-Accuracy Ring Laser Gyroscopes: Earth Rotation Rate and Relativistic Effects To cite this article: N Beverini et al 2016 J. Phys.: Conf. Ser.
More informationThe GINGER project and status of the GINGERino prototype at LNGS
Journal of Physics: Conference Series PAPER OPEN ACCESS The GINGER project and status of the GINGERino prototype at LNGS To cite this article: A Ortolan et al 2016 J. Phys.: Conf. Ser. 718 072003 Related
More informationA Laser gyroscope system to detect gravito-magnetic effect on Earth. (G-GranSasso, INFN Comm. II)
A Laser gyroscope system to detect gravito-magnetic effect on Earth (G-GranSasso, INFN Comm. II) it is a long story, started inside Virgo, in the near future it will move in a different direction, but
More informationHands on GINGER: Seismic Wave measurement
Università degli Studi di Genova, Dipartimento di Fisica, Genova, Italy INFN, Sezione di Genova, Genova, Italy E-mail: federico.ferraro@ge.infn.it Angela Di Virgilio INFN, Sezione di Pisa, Pisa, Italy
More informationRecent Advances in High Resolution Rotation Sensing
Recent Advances in High Resolution Rotation Sensing U. Schreiber 1,2, A. Gebauer 1, R. Hurst 2, J.-P. Wells 2 1 Forschungseinrichtung Satellitengeodäsie, Technische Universität München, Germany 2 Department
More informationarxiv: v1 [gr-qc] 24 Jun 2011
Measuring gravito-magnetic effects by multi ring-laser gyroscope F. Bosi, a G. Cella, b and A. Di Virgilio c INFN Sez. di Pisa, Pisa, Italy A.Ortolan d Laboratori Nazionali di Legnaro, INFN Legnaro (Padova),
More informationAngela Di Virgilio. INFN Sezione di Pisa
Angela Di Virgilio INFN Sezione di Pisa Trento, September 2013 2 Trento, September 2013 3 Small ring laser OFG Aircraft Navigation Submarine Navigation G-Pisa G (Wettzell) 10-4 10-6 10-8 10-10 10-12 10-14
More informationFirst Results of GINGERino, a deep underground ring-laser arxiv: v3 [physics.ins-det] 29 Mar 2016
First Results of GINGERino, a deep underground ring-laser arxiv:1601.02874v3 [physics.ins-det] 29 Mar 2016 J. Belfi 1, N. Beverini 1,2, F. Bosi 3, G. Carelli 1,2, D. Cuccato 3,4, G. De Luca 5, A. Di Virgilio
More informationI. Introduction. Abstract
First deep underground observation of rotational signals from an earthquake at teleseismic distance using a large ring laser gyroscope Andreino Simonelli 1,3,6,, Jacopo Belfi 1, Nicolò Beverini 1,2, Giorgio
More informationPhasor Calculations in LIGO
Phasor Calculations in LIGO Physics 208, Electro-optics Peter Beyersdorf Document info Case study 1, 1 LIGO interferometer Power Recycled Fabry-Perot Michelson interferometer 10m modecleaner filters noise
More informationExperimental determination of gravitomagnetic effects by means of ring lasers arxiv: v1 [gr-qc] 12 Dec 2012
Experimental determination of gravitomagnetic effects by means of ring lasers arxiv:1212.2880v1 [gr-qc] 12 Dec 2012 Angelo Tartaglia Politecnico, corso Duca degli Abruzzi 24, 10129 Torino, Italy, and INFN
More informationQuantum optics and squeezed states of light
Quantum optics and squeezed states of light Eugeniy E. Mikhailov The College of William & Mary June 15, 2012 Eugeniy E. Mikhailov (W&M) Quantum optics June 15, 2012 1 / 44 From ray optics to semiclassical
More informationState of the art cold atom gyroscope without dead times
State of the art cold atom gyroscope without dead times Remi Geiger SYRTE, Observatoire de Paris GDR IQFA Telecom Paris November 18 th, 2016 I. Dutta, D. Savoie, B. Fang, B. Venon, C. L. Garrido Alzar,
More informationAn Overview of Advanced LIGO Interferometry
An Overview of Advanced LIGO Interferometry Luca Matone Columbia Experimental Gravity group (GECo) Jul 16-20, 2012 LIGO-G1200743 Day Topic References 1 2 3 4 5 Gravitational Waves, Michelson IFO, Fabry-Perot
More informationOptical Metrology Applications at TAS-I in support of Gravity and Fundamental Physics
Optical Metrology Applications at TAS-I in support of Gravity and Fundamental Physics Template reference : 100181670S-EN Stefano Cesare, Thales Alenia Space Italia, Torino Workshop GG/GGG: state of the
More informationGROUND NOISE STUDIES USING THE TAMA300 GRAVITATIONAL-WAVE DETECTOR AND RELATED HIGHLY-SENSITIVE INSTRUMENTS
GROUND NOISE STUDIES USING THE TAMA300 GRAVITATIONAL-WAVE DETECTOR AND RELATED HIGHLY-SENSITIVE INSTRUMENTS Akito ARAYA Earthquake Research Institute, University of Tokyo, 1-1-1, Yayoi, Bunkyo, Tokyo 113-0032,
More informationSqueezed Light for Gravitational Wave Interferometers
Squeezed Light for Gravitational Wave Interferometers R. Schnabel, S. Chelkowski, H. Vahlbruch, B. Hage, A. Franzen, and K. Danzmann. Institut für Atom- und Molekülphysik, Universität Hannover Max-Planck-Institut
More informationThe technology behind LIGO: how to measure displacements of meters
The technology behind LIGO: how to measure displacements of 10-19 meters The LIGO interferometers Interferometry: displacement sensing Noise limits Advanced LIGO 4pm today, 1 West: Results from science
More informationThe gravitational wave detector VIRGO
The gravitational wave detector VIRGO for the VIRGO collaboration Raffaele Flaminio Laboratoire d Annecy-le-Vieux de Physique des Particules (LAPP) IN2P3 - CNRS Summary I. A bit of gravitational wave physics
More informationOptical Cavity Tests of Lorentz Invariance
Light driven Nuclear-Particle physics and Cosmology 2017 (Pacifico Yokohama) April 20, 2017 Optical Cavity Tests of Lorentz Invariance Yuta Michimura Department of Physics, University of Tokyo H. Takeda,
More informationSqueezed states of light - generation and applications
Squeezed states of light - generation and applications Eugeniy E. Mikhailov The College of William & Mary Fudan, December 24, 2013 Eugeniy E. Mikhailov (W&M) Squeezed light Fudan, December 24, 2013 1 /
More informationThe status of VIRGO. To cite this version: HAL Id: in2p
The status of VIRGO E. Tournefier, F. Acernese, P. Amico, M. Al-Shourbagy, S. Aoudia, S. Avino, D. Babusci, G. Ballardin, R. Barillé, F. Barone, et al. To cite this version: E. Tournefier, F. Acernese,
More informationA broad band detector of Gravitational Waves: The dual torus
A broad band detector of Gravitational Waves: The dual torus M.BONALDI 1, M.CERDONIO 2, L.CONTI 2, M.PINARD 3, G.A.PRODI 4, L.TAFFARELLO 5, J.P.ZENDRI 5 1 Istituto di Fotonica e Nanotecnologie, ITC-CNR,
More informationarxiv:physics/ v1 30 Jun 2004
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 109, B06405, doi:10.1029/2003jb002803, 2004 arxiv:physics/0406156 v1 30 Jun 2004 Direct measurement of diurnal polar motion by ring laser gyroscopes K. U. Schreiber,
More informationEnhancing sensitivity of gravitational wave antennas, such as LIGO, via light-atom interaction
Enhancing sensitivity of gravitational wave antennas, such as LIGO, via light-atom interaction Eugeniy E. Mikhailov The College of William & Mary, USA New Laser Scientists, 4 October 04 Eugeniy E. Mikhailov
More informationSpectroscopy of lithium ions at 34% of the speed of light with sub-doppler linewidth
Towards a test of time dilation: Spectroscopy of lithium ions at 34% of the speed of light with sub-doppler linewidth.07.008 /3 Outline Introduction: test theories for SRT Tools for modern test of time
More informationarxiv: v2 [physics.optics] 7 Mar 2013
Feasibility of giant fiber-optic gyroscopes Stephan Schiller Institut für Experimentalphysik, Heinrich-Heine- Universitüt Düsseldorf, Düsseldorf, Germany Abstract arxiv:131.769v2 [physics.optics] 7 Mar
More informationCavity decay rate in presence of a Slow-Light medium
Cavity decay rate in presence of a Slow-Light medium Laboratoire Aimé Cotton, Orsay, France Thomas Lauprêtre Fabienne Goldfarb Fabien Bretenaker School of Physical Sciences, Jawaharlal Nehru University,
More informationEE 570: Location and Navigation
EE 570: Location and Navigation Sensor Technology Stephen Bruder 1 Aly El-Osery 2 1 Electrical and Computer Engineering Department, Embry-Riddle Aeronautical Univesity Prescott, Arizona, USA 2 Electrical
More informationDirect measurement of diurnal polar motion by ring laser gyroscopes
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 109,, doi:10.1029/2003jb002803, 2004 Direct measurement of diurnal polar motion by ring laser gyroscopes K. U. Schreiber, A. Velikoseltsev, and M. Rothacher Forschungseinrichtung
More informationGravitational tests using simultaneous atom interferometers
Gravitational tests using simultaneous atom interferometers Gabriele Rosi Quantum gases, fundamental interactions and cosmology conference 5-7 October 017, Pisa Outline Introduction to atom interferometry
More informationTowards compact transportable atom-interferometric inertial sensors
Towards compact transportable atom-interferometric inertial sensors G. Stern (SYRTE/LCFIO) Increasing the interrogation time T is often the limiting parameter for the sensitivity. Different solutions:
More informationStatus and Plans for Future Generations of Ground-based Interferometric Gravitational-Wave Antennas
Status and Plans for Future Generations of Ground-based Interferometric Gravitational-Wave Antennas 4 th international LISA Symposium July 22, 2002 @ Penn State University Seiji Kawamura National Astronomical
More informationFundamental Physics with Atomic Interferometry
Fundamental Physics with Atomic Interferometry Peter Graham Stanford with Savas Dimopoulos Jason Hogan Mark Kasevich Surjeet Rajendran PRL 98 (2007) PRD 78 (2008) PRD 78 (2008) PLB 678 (2009) arxiv:1009.2702
More informationRadiation pressure effects in interferometric measurements
Laboratoire Kastler Brossel, Paris Radiation pressure effects in interferometric measurements A. Heidmann M. Pinard J.-M. Courty P.-F. Cohadon T. Briant O. Arcizet T. Caniard C. Molinelli P. Verlot Quantum
More informationAtomic magnetometers: new twists to the old story. Michael Romalis Princeton University
Atomic magnetometers: new twists to the old story Michael Romalis Princeton University Outline K magnetometer Elimination of spin-exchange relaxation Experimental setup Magnetometer performance Theoretical
More informationTowards quantum metrology with N00N states enabled by ensemble-cavity interaction. Massachusetts Institute of Technology
Towards quantum metrology with N00N states enabled by ensemble-cavity interaction Hao Zhang Monika Schleier-Smith Robert McConnell Jiazhong Hu Vladan Vuletic Massachusetts Institute of Technology MIT-Harvard
More information0.5 atoms improve the clock signal of 10,000 atoms
0.5 atoms improve the clock signal of 10,000 atoms I. Kruse 1, J. Peise 1, K. Lange 1, B. Lücke 1, L. Pezzè 2, W. Ertmer 1, L. Santos 3, A. Smerzi 2, C. Klempt 1 1 Institut für Quantenoptik, Leibniz Universität
More informationOptical Techniques for Gravitational-Wave Detection
Optical Techniques for Gravitational-Wave Detection M. Tacca Nikhef - Amsterdam Nikhef- 2017 July 14th Born in Novara (Italy) Introducing Myself PostDoc Fellow @ Nikhef (since July 2017) Laurea & PhD @
More informationScale factor characteristics of laser gyroscopes of different sizes
Scale factor characteristics of laser gyroscopes of different sizes Zhenfang Fan, Guangfeng Lu, Shomin Hu, Zhiguo Wang and Hui Luo a) National University of Defense Technology, Changsha, Hunan 410073,
More informationFirst Results from the Mesa Beam Profile Cavity Prototype
First Results from the Mesa Beam Profile Cavity Prototype Marco Tarallo 26 July 2005 Caltech LIGO Laboratory LIGO-G050348-00-D LIGO Scientific Collaboration 1 Contents Environment setup: description and
More informationSearching for Stochastic Gravitational Wave Background with LIGO
Searching for Stochastic Gravitational Wave Background with LIGO Vuk Mandic University of Minnesota 09/21/07 Outline LIGO Experiment:» Overview» Status» Future upgrades Stochastic background of gravitational
More informationQuantum enhanced magnetometer and squeezed state of light tunable filter
Quantum enhanced magnetometer and squeezed state of light tunable filter Eugeniy E. Mikhailov The College of William & Mary October 5, 22 Eugeniy E. Mikhailov (W&M) Squeezed light October 5, 22 / 42 Transition
More informationNanometrology and its role in the development of nanotechnology
Nanometrology and its role in the development of nanotechnology Rob Bergmans Nederlands Meetinstituut Van Swinden Laboratorium 1 NMi Van Swinden Laboratorium The Art of Measurement Dutch national metrology
More informationPreparation of the data analysis of the gravitational wave space antenna.
Preparation of the data analysis of the gravitational wave space antenna. 1) LISA (Laser Interferometer Space Antenna) Why? 2)How? 1 Frequency Limitation Seismic noise cannot be cancelled at low-frequency
More information. D CR Nomenclature D 1
. D CR Nomenclature D 1 Appendix D: CR NOMENCLATURE D 2 The notation used by different investigators working in CR formulations has not coalesced, since the topic is in flux. This Appendix identifies the
More informationComputing Laser Beam Paths in Optical Cavities:
arxiv manuscript No. (will be inserted by the editor) Computing Laser Beam Paths in Optical Cavities: An Approach based on Geometric Newton Method Davide Cuccato Alessandro Saccon Antonello Ortolan Alessandro
More informationSensing Rotation with Light: From Fiber Optic Gyroscope to Exceptional Points
Sensing Rotation with Light: From Fiber Optic Gyroscope to Exceptional Points Michel Digonnet Applied Physics Department Stanford University Stanford University 1 The Sagnac Effect in Vacuum! The fiber
More informationCold Atom Navigation Sensors. Atom Interferometry Group Stanford Center for Position, Navigation and Time Mark Kasevich
Cold Atom Navigation Sensors Atom Interferometry Group Stanford Center for Position, Navigation and Time Mark Kasevich Navigation strategies Radio navigation Radio reference signals allow trajectory determination
More informationExperimental AMO eets meets M odel Model Building: Part I (Precision Atom Interferometry)
Experimental AMO meets Model Building: Part I (Precision Atom Interferometry) Interference of Rb atoms Chiow, et. al, PRL, 2011 Young s double slit with atoms Young s 2 slit with Helium atoms Interference
More informationSensitivity limits of atom interferometry gravity gradiometers and strainmeters. Fiodor Sorrentino INFN Genova
Sensitivity limits of atom interferometry gravity gradiometers and strainmeters Fiodor Sorrentino INFN Genova 1 Outline AI sensors, state of the art performance Main noise sources Potential improvements
More informationDelay compensated Optical Time and Frequency Distribution for Space Geodesy
Delay compensated Optical Time and Frequency Distribution for Space Geodesy U. Schreiber 1, J. Kodet 1, U. Hessels 2, C. Bürkel 2 1 Technische Universität München, GO- Wettzell 2 Bundesamt für Kartographie
More informationA MODERN MICHELSON-MORLEY EXPERIMENT USING ACTIVELY ROTATED OPTICAL RESONATORS
A MODERN MICHELSON-MORLEY EXPERIMENT USING ACTIVELY ROTATED OPTICAL RESONATORS S. HERRMANN, A. SENGER, K. MÖHLE, E. V. KOVALCHUK, A. PETERS Institut für Physik, Humboldt-Universität zu Berlin Hausvogteiplatz
More informationCold atom gyroscope with 1 nrad.s -1 rotation stability
Cold atom gyroscope with 1 nrad.s -1 rotation stability D. Savoie, I. Dutta, B. Fang, B. Venon, N. Miélec, R. Sapam, C. Garrido Alzar, R. Geiger and A. Landragin LNE-SYRTE, Observatoire de Paris IACI team
More informationAtomic-Photonic Integration (A-PhI) A-Φ Proposers Day
Atomic-Photonic Integration (A-PhI) A-Φ Proposers Day Dr. John Burke Microsystems Technology Office (MTO) 1 August 2018 1 What is A-PhI? Atomic physics allows for accurate and sensitive measurements. Supporting
More informationGauss Modes. Paul Fulda
Interferometry Interferometry with with LaguerreLaguerreGauss Gauss Modes Modes Paul Paul Fulda Fulda University University of of Birmingham Birmingham E.T. E.T. WP3 WP3 Meeting Meeting -- -- 09/06/2009
More informationLISA Technology: A Status Report
LISA Technology: A Status Report Guido Mueller University of Florida Minnesota 2010 1 Content LISA Concept Gravitational Reference Sensor Interferometry Measurement System Status/Outlook 2 LISA Concept
More informationProbing P & T-violation Beyond the Standard Model. Aaron E. Leanhardt
An Electron EDM Search in HfF + : Probing P & T-violation Beyond the Standard Model Aaron E. Leanhardt Experiment: Laura Sinclair, Russell Stutz & Eric Cornell Theory: Ed Meyer & John Bohn JILA, NIST,
More informationFundamental Physics in Space S. Vitale, University of Trento ESO-Garching S. Vitale 1
Fundamental Physics in Space S. Vitale, University of Trento Vitale@science.unitn.it ESO-Garching-15-09-03 S. Vitale 1 Using Space to Investigate Fundamental Laws of Physics: Quantum measurements, entanglement,
More informationPioneer anomaly: Implications for LISA?
Pioneer anomaly: Implications for LISA? Denis Defrère Astrophysics and Geophysics Institute of Liege (Belgium) Andreas Rathke EADS Astrium GmbH Friedrichshafen (Germany) ISSI Meeting - Bern November 10th
More informationNuclear spin maser with a novel masing mechanism and its application to the search for an atomic EDM in 129 Xe
Nuclear spin maser with a novel masing mechanism and its application to the search for an atomic EDM in 129 Xe A. Yoshimi RIKEN K. Asahi, S. Emori, M. Tsukui, RIKEN, Tokyo Institute of Technology Nuclear
More informationDetermining α from Helium Fine Structure
Determining α from Helium Fine Structure How to Measure Helium Energy Levels REALLY Well Lepton Moments 2006 June 18, 2006 Daniel Farkas and Gerald Gabrielse Harvard University Physics Dept Funding provided
More informationAtom interferometry. Quantum metrology and fundamental constants. Laboratoire de physique des lasers, CNRS-Université Paris Nord
Diffraction Interferometry Conclusion Laboratoire de physique des lasers, CNRS-Université Paris Nord Quantum metrology and fundamental constants Diffraction Interferometry Conclusion Introduction Why using
More informationUNIVERSITY OF SOUTHAMPTON
UNIVERSITY OF SOUTHAMPTON PHYS6012W1 SEMESTER 1 EXAMINATION 2012/13 Coherent Light, Coherent Matter Duration: 120 MINS Answer all questions in Section A and only two questions in Section B. Section A carries
More informationInertial Frame frame-dragging
Frame Dragging Frame Dragging An Inertial Frame is a frame that is not accelerating (in the sense of proper acceleration that would be detected by an accelerometer). In Einstein s theory of General Relativity
More informationQuantum Mechanical Noises in Gravitational Wave Detectors
Quantum Mechanical Noises in Gravitational Wave Detectors Max Planck Institute for Gravitational Physics (Albert Einstein Institute) Germany Introduction Test masses in GW interferometers are Macroscopic
More informationFile name: Supplementary Information Description: Supplementary Figures, Supplementary Notes and Supplementary References
File name: Supplementary Information Description: Supplementary Figures, Supplementary Notes and Supplementary References File name: Peer Review File Description: Optical frequency (THz) 05. 0 05. 5 05.7
More informationShau-Yu Lan 藍劭宇. University of California, Berkeley Department of Physics
Atom Interferometry Experiments for Precision Measurement of Fundamental Physics Shau-Yu Lan 藍劭宇 University of California, Berkeley Department of Physics Contents Principle of Light-Pulse Atom Interferometer
More informationRelativistic Aspects of the Centripetal Force M. Conte
ISTITUTO NAZIONALE DI FISICA NUCLEARE Sezione di Genova INFN-17-11/GE 29 th May 2017 Relativistic Aspects of the Centripetal Force M. Conte Dipartimento di Fisica dell'università di Genova and INFN-Sezione
More informationOPTI510R: Photonics. Khanh Kieu College of Optical Sciences, University of Arizona Meinel building R.626
OPTI510R: Photonics Khanh Kieu College of Optical Sciences, University of Arizona kkieu@optics.arizona.edu Meinel building R.626 Important announcements Homework #1 is due. Homework #2 is assigned, due
More informationSimple Atom, Extreme Nucleus: Laser Trapping and Probing of He-8. Zheng-Tian Lu Argonne National Laboratory University of Chicago
Simple Atom, Extreme Nucleus: Laser Trapping and Probing of He-8 Zheng-Tian Lu Argonne National Laboratory University of Chicago Funding: DOE, Office of Nuclear Physics Helium Atom fm Å e - Ionization
More informationSqueezed Light Techniques for Gravitational Wave Detection
Squeezed Light Techniques for Gravitational Wave Detection July 6, 2012 Daniel Sigg LIGO Hanford Observatory Seminar at TIFR, Mumbai, India G1200688-v1 Squeezed Light Interferometry 1 Abstract Several
More informationGeneral Relativity: Einstein s Theory of Gravitation. Arien Crellin-Quick and Tony Miller SPRING 2009 PHYS43, SRJC
General Relativity: Einstein s Theory of Gravitation Presented By Arien Crellin-Quick and Tony Miller SPRING 2009 PHYS43, SRJC The Motivations of General Relativity General Relativity, or GR, was created
More informationFrequency dependent squeezing for quantum noise reduction in second generation Gravitational Wave detectors. Eleonora Capocasa
Frequency dependent squeezing for quantum noise reduction in second generation Gravitational Wave detectors Eleonora Capocasa 10 novembre 2016 My thesis work is dived into two parts: Participation in the
More informationA New Precise Measurement of the Stark Shift in the 6P 1/2 ->7S 1/2 378 nm Transition in Thallium
A New Precise Measurement of the Stark Shift in the 6P 1/2 ->7S 1/2 378 nm Transition in Thallium Apker Award Finalist Talk September 4, 2002 S. Charles Doret Earlier work by Andrew Speck Williams 00,
More informationAdvanced Virgo: Status and Perspectives. A.Chiummo on behalf of the VIRGO collaboration
Advanced Virgo: Status and Perspectives A.Chiummo on behalf of the VIRGO collaboration Advanced Virgo 2 Advanced Virgo What s that? 3 Advanced Virgo Advanced Virgo (AdV): upgrade of the Virgo interferometric
More informationSensors: a) Gyroscope. Micro Electro-Mechanical (MEM) Gyroscopes: (MEM) Gyroscopes. Needs:
Sensors: Needs: Data redundancy Data for both situations: eclipse and sun Question of sampling frequency Location and size/weight Ability to resist to environment Low consumption Low price a) Gyroscope
More informationElectro optic sampling as a timing diagnostic at Pegasus lab
Electro optic sampling as a timing diagnostic at Pegasus lab Cheyne M. Scoby Particle Beam Physics Lab, UCLA 13 January 2009 High Power High Brightness Workshop Los Angeles, CA Outline Motivation for EOS
More informationAngular Momentum L = I ω
Angular Momentum L = Iω If no NET external Torques act on a system then Angular Momentum is Conserved. Linitial = I ω = L final = Iω Angular Momentum L = Iω Angular Momentum L = I ω A Skater spins with
More informationSqueezed Light and Quantum Imaging with Four-Wave Mixing in Hot Atoms
Squeezed Light and Quantum Imaging with Four-Wave Mixing in Hot Atoms Squeezed Light and Quantum Imaging with Four-Wave Mixing in Hot Atoms Alberto Marino Ulrich Vogl Jeremy Clark (U Maryland) Quentin
More informationThe Zeeman Effect in Mercury Vapor and the Determination e/m by Fabry-Perot Interferometry
The Zeeman Effect in Mercury Vapor and the Determination e/m by Fabry-Perot Interferometry Edwin Ng MIT Department of Physics (Dated: March 17, 2012) We analyze the Zeeman fine structure of mercury vapor
More informationDevelopment of a compact Yb optical lattice clock
Development of a compact Yb optical lattice clock A. A. Görlitz, C. Abou-Jaoudeh, C. Bruni, B. I. Ernsting, A. Nevsky, S. Schiller C. ESA Workshop on Optical Atomic Clocks D. Frascati, 14 th 16 th of October
More informationHybrid Atom-Optical Interferometry for Gravitational Wave Detection and Geophysics
Hybrid Atom-Optical Interferometry for Gravitational Wave Detection and Geophysics Remi Geiger, SYRTE for the MIGA consortium EGAS 46, July 3rd 2014, Lille, France http://syrte.obspm.fr/tfc/capteurs_inertiels
More informationINTERNATIONAL SLR SERVICE
ARTIFICIAL SATELLITES, Vol. 46, No. 4 2011 DOI: 10.2478/v10018-012-0004-z INTERNATIONAL SLR SERVICE Stanisław Schillak Space Research Centre, Polish Academy of Sciences Astrogeodynamic Observatory, Borowiec
More informationI. Introduction. What s the problem? Standard quantum limit (SQL) for force detection. The right wrong story III. Beating the SQL.
Quantum limits on estimating a waveform II. I. Introduction. What s the problem? Standard quantum limit (SQL) for force detection. The right wrong story III. Beating the SQL. Three strategies Carlton M.
More informationwith Application to Autonomous Vehicles
Nonlinear with Application to Autonomous Vehicles (Ph.D. Candidate) C. Silvestre (Supervisor) P. Oliveira (Co-supervisor) Institute for s and Robotics Instituto Superior Técnico Portugal January 2010 Presentation
More informationDevelopment of ground based laser interferometers for the detection of gravitational waves
Development of ground based laser interferometers for the detection of gravitational waves Rahul Kumar ICRR, The University of Tokyo, 7 th March 2014 1 Outline 1. Gravitational waves, nature & their sources
More informationOptical Lattice Clock with Neutral Mercury
Optical Lattice Clock with Neutral Mercury R. Tyumenev, Z. Xu, J.J. McFerran, Y. Le Coq and S. Bize SYRTE, Observatoire de Paris 61 avenue de l Observatoire, 75014 Paris, France rinat.tyumenev@obspm.fr
More informationAtom Interferometric Gravity Wave Detectors. Mark Kasevich Dept. of Physics and Applied Physics Stanford University, Stanford CA
Atom Interferometric Gravity Wave Detectors Mark Kasevich Dept. of Physics and Applied Physics Stanford University, Stanford CA Outline Basic concepts Current instrumentation AGIS detectors Space-based/LEO
More informationAtom Quantum Sensors on ground and in space
Atom Quantum Sensors on ground and in space Ernst M. Rasel AG Wolfgang Ertmer Quantum Sensors Division Institut für Quantenoptik Leibniz Universität Hannover IQ - Quantum Sensors Inertial Quantum Probes
More informationAdvanced Workshop on Nanomechanics September Quantum Measurement in an Optomechanical System
2445-03 Advanced Workshop on Nanomechanics 9-13 September 2013 Quantum Measurement in an Optomechanical System Tom Purdy JILA - NIST & University of Colorado U.S.A. Tom Purdy, JILA NIST & University it
More informationLow probability, large fluctuations of the noise in detectors of gravitational waves
European Research Council Low probability, large fluctuations of the noise in detectors of gravitational waves Nickname oftheproject: RareNoise Project Number: 202680 Principal Investigator: Livia Conti
More informationSUPPLEMENTARY INFORMATION
Systematic shift caused by trap asymmetry The major systematic correction in the reported cyclotron frequency ratio comparison of an antiproton at ν c, p and a negatively charged hydrogen ion (H ) at ν
More informationAngular Momentum L = I ω
Angular Momentum L = Iω If no NET external Torques act on a system then Angular Momentum is Conserved. Linitial = I ω = L final = Iω Angular Momentum L = Iω Angular Momentum L = I ω A Skater spins with
More informationLIGO s Thermal Noise Interferometer: Progress and Status
LIGO s Thermal Noise Interferometer: Progress and Status Eric Black LSC Meeting Review November 12, 2003 Ivan Grudinin, Akira Villar, Kenneth G. Libbrecht Thanks also to: Kyle Barbary, Adam Bushmaker,
More informationHow to measure a distance of one thousandth of the proton diameter? The detection of gravitational waves
How to measure a distance of one thousandth of the proton diameter? The detection of gravitational waves M. Tacca Laboratoire AstroParticule et Cosmologie (APC) - Paris Journée GPhys - 2016 July 6th General
More informationStatus of LIGO. David Shoemaker LISA Symposium 13 July 2004 LIGO-G M
Status of LIGO David Shoemaker LISA Symposium 13 July 2004 Ground-based interferometric gravitational-wave detectors Search for GWs above lower frequency limit imposed by gravity gradients» Might go as
More informationObserving the material universe
Observing the material universe Using the see-and-avoid technique of visual flight regulations a Star Trek pilot would collide on the Ocean crust (direct detection). Slide 1 Some of the current hottest
More informationDr. Jean Lautier-Gaud October, 14 th 2016
New generation of operational atomic clock: what perspectives for radio-astronomy & VLBI? Dr. Jean Lautier-Gaud October, 14 th 2016 Courtesy of Noel Dimarcq, SYRTE Content 1. Why is Muquans here? 2. What
More information