Six-Axis Inertial Sensor Using Cold-Atom Interferometry

Canuel, B.; Leduc, Florence; Holleville, David; Gauguet, Alexandre; Fils, J.; Virdis, Antonio; Clairon, A.; Dimarcq, N.; Bordé, Ch. J.; Landragin, Arnaud; Bouyer, Philippe

doi:10.1103/physrevlett.97.010402

Cited by 342 publications

(325 citation statements)

References 16 publications

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“…Atom interferometry is a leading precision measurement technology, having demonstrated state-of-the-art measurements of accelerations and rotations [1][2][3][4][5][6], gravity gradients [7,8], magnetic fields [9], the fine structure constant (α) [10,11], and Newton's gravitational constant (G) [12][13][14][15]. Further increases to the sensitivity of atom interferometers would allow for some exciting science, such as improved tests of the weak equivalence principle [16][17][18], searches for quantum gravitational effects [19], and the measurement of gravitational waves [20,21].…”

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confidence: 99%

Squeezed-light-enhanced atom interferometry below the standard quantum limit

et al. 2014

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We investigate the prospect of enhancing the phase sensitivity of atom interferometers in the Mach-Zehnder configuration with squeezed light. Ultimately, this enhancement is achieved by transferring the quantum state of squeezed light to one or more of the atomic input beams, thereby allowing operation below the standard quantum limit. We analyze in detail three specific schemes that utilize (1) single-mode squeezed optical vacuum (i.e., low-frequency squeezing), (2) two-mode squeezed optical vacuum (i.e., high-frequency squeezing) transferred to both atomic inputs, and (3) two-mode squeezed optical vacuum transferred to a single atomic input. Crucially, our analysis considers incomplete quantum state transfer (QST) between the optical and atomic modes, and the effects of depleting the initially prepared atomic source. Unsurprisingly, incomplete QST degrades the sensitivity in all three schemes. We show that by measuring the transmitted photons and using information recycling [Phys. Rev. Lett. 110, 053002 (2013)], the degrading effects of incomplete QST on the sensitivity can be substantially reduced. In particular, information recycling allows scheme (2) to operate at the Heisenberg limit irrespective of the QST efficiency, even when depletion is significant. Although we concentrate on Bosecondensed atomic systems, our scheme is equally applicable to ultracold thermal vapors.

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confidence: 99%

Squeezed-light-enhanced atom interferometry below the standard quantum limit

et al. 2014

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“…This proposal opens promising perspectives for the development of cold atom gravimeters [17] and optical clocks [4,5,6,7]. It may also be turned into an atomic gyrometer [2,19] by using additional horizontal light pulses and exploiting the transverse wave-packet motion. …”

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Space-time sensors using multiple-wave atom levitation

Impens

Bordé

2009

Phys. Rev. A

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The best clocks to date control the atomic motion by trapping the sample in an optical lattice and then interrogate the atomic transition by shining on these atoms a distinct laser of controlled frequency. In order to perform both tasks simultaneously and with the same laser field, we propose to use instead the levitation of a Bose-Einstein condensate through multiple-wave atomic interferences. The levitating condensate experiences a coherent localization in momentum and a controlled diffusion in altitude. The sample levitation is bound to resonance conditions used either for frequency or for acceleration measurements. The chosen vertical geometry solves the limitations imposed by the sample free fall in previous optical clocks using also atomic interferences. This configuration yields multiple-wave interferences enabling levitation and enhancing the measurement sensitivity. This setup, analogous to an atomic resonator in momentum space, constitutes an attractive alternative to existing atomic clocks and gravimeters.

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“…[1], a 3 parts per billion (ppb) modulation in local gravity leads to a 1% shift of the interference fringe. They thus make excellent microscopes for small signals that have been applied in many cutting-edge precision measurements [1][2][3][4][5][6][7][8][9][10]. Large-momentum transfer (LMT) beam splitters, which have become practical recently [11], promise to increase the sensitivity further, by factors of 10s to 100s, by increasing the space-time area enclosed between the interferometer arms.…”

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Noise-Immune Conjugate Large-Area Atom Interferometers

et al. 2009

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We present a pair of simultaneous conjugate Ramsey-Bordé atom interferometers (SCI) using large (20hk)-momentum transfer (LMT) beam splitters, wherehk is the photon momentum. Simultaneous operation allows for common-mode rejection of vibrational noise. This allows us to surpass the enclosed space-time area of previous interferometers with a splitting of 20hk by a factor of 2,500.Among applications, we demonstrate a 3.4 ppb resolution in the fine structure constant and discuss tests of fundamental laws of physics.

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Six-Axis Inertial Sensor Using Cold-Atom Interferometry

Cited by 342 publications

References 16 publications

Squeezed-light-enhanced atom interferometry below the standard quantum limit

Squeezed-light-enhanced atom interferometry below the standard quantum limit

Space-time sensors using multiple-wave atom levitation

Noise-Immune Conjugate Large-Area Atom Interferometers

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