Differential interferometry using a Bose-Einstein condensate

Gersemann, Matthias; Gebbe, Martina; Abend, Sven; Schubert, Christian; Rasel, Ernst M.

doi:10.1140/epjd/e2020-10417-8

Cited by 22 publications

(13 citation statements)

References 59 publications

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“…The atoms are prepared in the magneto-optical traps (MOT 1&2), and propulsed towards each other. option for differential interferometry with Bose-Einstein condensates is presented in [17].…”

Section: Cai Mathematical Modelmentioning

confidence: 99%

Integration of atom interferometers and inertial measurement units to improve navigation performance

Tennstedt

Schön

2021

2021 28th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS)

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This paper explores a way of combining conventional inertial sensors with cold atom interferometers (CAI) in order to reduce the drift of the navigation solutions in velocity and orientation. Instead of complementing and improving the CAI with conventional sensors, in this approach the conventional IMU will be used as main sensor for a prediction of the kinematic state. The CAI is then used for the correction of systematic errors and offsets in the framework of an extended Kalman Filter. Monte Carlo simulation studies demonstrate an improvement of the navigation solution precision. In addition, most drifts of velocity and orientation can be eliminated and the uncertainty of the velocity solution can further be reduced by a factor of 30 or more compared to the conventional strapdown. The observability of the error states is discussed.

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Section: Cai Mathematical Modelmentioning

confidence: 99%

Integration of atom interferometers and inertial measurement units to improve navigation performance

Tennstedt

Schön

2021

2021 28th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS)

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“…In the case of Bragg interferometers, the output ports are in the same hyperfine state and differ only by their momentum. One can thus in principle spatially resolve the different momenta states after some free evolution, via absorption imaging on a CCD camera for instance [16]. This method ideally requires that the spatial separation between the output ports exceeds the size of the atomic cloud at the detection.…”

Section: Introductionmentioning

confidence: 99%

Separating the output ports of a Bragg interferometer via velocity selective transport

Piccon,

Sarkar,

Merlet

et al. 2022

Preprint

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We report on the study of a detection scheme based on a Bloch separator in two-photon Bragg interferometers. We increase the spatial separation between the two output ports of the interferometer by selectively imparting 30 Bloch oscillations to one of them before their detection via time of flight. This method allows increasing the duration of the interferometer by reducing the time for discriminating the ports of the interferometer at detection. We study in detail the impact of this separator on the performance of a dual gravity sensor, and in particular on its measurement sensitivities to gravity acceleration and gravity gradients.

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“…Atom interferometry offers a different approach for providing absolute measurements of inertial forces with high long-term stability. Moreover, achieving the necessary areas for competitive performance with matter waves is a long-standing challenge 4 – 10 . We propose an atom interferometer performing multiple loops in free fall.…”

Section: Introductionmentioning

confidence: 99%

Multi-loop atomic Sagnac interferometry

Schubert

Abend

Gersemann

et al. 2021

Sci Rep

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The sensitivity of light and matter-wave interferometers to rotations is based on the Sagnac effect and increases with the area enclosed by the interferometer. In the case of light, the latter can be enlarged by forming multiple fibre loops, whereas the equivalent for matter-wave interferometers remains an experimental challenge. We present a concept for a multi-loop atom interferometer with a scalable area formed by light pulses. Our method will offer sensitivities as high as $$2\times 10^{-11}$$ 2 × 10 - 11 rad/s at 1 s in combination with the respective long-term stability as required for Earth rotation monitoring.

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Differential interferometry using a Bose-Einstein condensate

Cited by 22 publications

References 59 publications

Integration of atom interferometers and inertial measurement units to improve navigation performance

Integration of atom interferometers and inertial measurement units to improve navigation performance

Separating the output ports of a Bragg interferometer via velocity selective transport

Multi-loop atomic Sagnac interferometry

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