Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1805.05707 · Optics Communications

Scheme for suppressing atom expansion induced contrast loss in atom interferometers

Qingqing Hu, Yukun Luo, Aiai Jia, Chunhua Wei, Shuhua Yan, Jun Jie Yang

Published Jan 6, 2017• 8 citations
arXivHTMLPDF
DOI
10.1016/j.optcom.2016.12.054

Related papers

Interaction-induced loss of contrast in Michelson-type atom interferometers

Maxim Olshanii, Vanja Dunjko

Bulletin of the American Physical Society•May 20, 2005•0 citations

Interferometry in dense nonlinear media and interaction-induced loss of contrast in microfabricated atom interferometers

Maxim Olshanii, Vanja Dunjko

In this paper we update the existing schemes for computation of atom-interferometric signal in single-atom interferometers to interferometry with dense Bose-condensed atomic samples. Using the theory developed we explain the fringe contrast degradation observed, for longer duration of interferometric cycle, in the Michelson interferometer on a chip recently realized at JILA (Ying-Ju Wang, Dana Z. Anderson, Victor M. Bright, Eric A. Cornell, Quentin Diot, Tetsuo Kishimoto, Mara Prentiss, R. A. Saravanan, Stephen R. Segal, Saijun Wu, Phys. Rev. Lett. 94, 090405 (2005)). We further suggest several recipes for suppression of the interaction-related contrast degradation.

arXiv:cond-mat/0505358•May 14, 2005•12 citations

The effect of wavefront aberrations in atom interferometry

V. Schkolnik, B. Leykauf, M. Hauth +2 more

arXiv:1411.7914•Applied Physics B•Jun 1, 2015•105 citations

Novel atom interferometers

Frank A. Narducci

Optical and Quantum Sensing and Precision Metrology II•Mar 5, 2026•0 citations

Impact of light-shift inhomogeneities on the contrast of light-pulse atom interferometers

Anonymous, Diego Alejandro Lancheros Naranjo, Rayan Si-Ahmed +3 more

We study the loss of the contrast in an atom interferometer when increasing the duration of Raman mirror pulses, and find the contrast decay rate to increase with the interferometer duration. We attribute this effect to the transverse spatial fluctuations of the intensity across the Raman beams, and to the dephasing induced by the associated light shifts inhomogeneities. Simulations based on the propagation of noisy synthetic Raman beams show that the contrast decay rate increases with the distance between the wavepackets at the mirror pulse, before reaching an asymptotic limit when intensity fluctuations between the two wavepackets become completely decorrelated. Finally, simulations based on the propagation of Raman beams having their measured intensity fluctuations predict contrast loss rates consistent with our measurements, confirming the detrimental role for the interferometer contrast played by intensity fluctuations across the interferometer laser beams.

arXiv:2609.00991•Physical Review A•Aug 10, 2026•0 citations

Analysis and suppression of wave-front-aberration phase noise in weak-equivalence-principle tests using dual-species atom interferometers

Jiangong Hu, Xi Chen, Jie Fang +4 more

The wave-front aberration of Raman beams induces phase noise in atom interferometers and thus limits the performance of atom interferometers. We theoretically analyze the wave-front-aberration phase noise in weak-equivalence-principle tests using dual-species atom interferometers, and propose an expansion-rate-selection method to suppress the wave-front-aberration phase noise in both isotopic and nonisotopic atom interferometers. The suppression ratio is about 10 at the expense of half the number of atoms. The simulation based on appropriate experimental parameters shows that the wave-front aberration caused standard deviations to the E\"otv\"os coefficient in weak-equivalence-principle tests using $^{85}\mathrm{Rb}\text{\ensuremath{-}}^{87}\mathrm{Rb}$ and $^{41}\mathrm{K}\text{\ensuremath{-}}^{87}\mathrm{Rb}$ are $1.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}14}$ and $3.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}13}$. Better results can be obtained by improving the wave-front quality and utilizing atom cloud with lower temperature. The analysis and suppression of wave-front-aberration phase noise will be useful for the design of high-precision atom interferometer--based weak-equivalence-principle tests both on ground and in space.

Physical Review A•Aug 21, 2017•19 citations
In this paper we update the existing schemes for computation of atom-interferometric signal in single-atom interferometers to interferometry with dense Bose-condensed atomic samples. Using the theory developed we explain the fringe contrast degradation observed, for longer duration of interferometric cycle, in the Michelson interferometer on a chip recently realized at JILA (Ying-Ju Wang, Dana Z. Anderson, Victor M. Bright, Eric A. Cornell, Quentin Diot, Tetsuo Kishimoto, Mara Prentiss, R. A. Saravanan, Stephen R. Segal, Saijun Wu, Phys. Rev. Lett. 94, 090405 (2005)). We further suggest several recipes for suppression of the interaction-related contrast degradation.
We study the loss of the contrast in an atom interferometer when increasing the duration of Raman mirror pulses, and find the contrast decay rate to increase with the interferometer duration. We attribute this effect to the transverse spatial fluctuations of the intensity across the Raman beams, and to the dephasing induced by the associated light shifts inhomogeneities. Simulations based on the propagation of noisy synthetic Raman beams show that the contrast decay rate increases with the distance between the wavepackets at the mirror pulse, before reaching an asymptotic limit when intensity fluctuations between the two wavepackets become completely decorrelated. Finally, simulations based on the propagation of Raman beams having their measured intensity fluctuations predict contrast loss rates consistent with our measurements, confirming the detrimental role for the interferometer contrast played by intensity fluctuations across the interferometer laser beams.
The wave-front aberration of Raman beams induces phase noise in atom interferometers and thus limits the performance of atom interferometers. We theoretically analyze the wave-front-aberration phase noise in weak-equivalence-principle tests using dual-species atom interferometers, and propose an expansion-rate-selection method to suppress the wave-front-aberration phase noise in both isotopic and nonisotopic atom interferometers. The suppression ratio is about 10 at the expense of half the number of atoms. The simulation based on appropriate experimental parameters shows that the wave-front aberration caused standard deviations to the E\"otv\"os coefficient in weak-equivalence-principle tests using $^{85}\mathrm{Rb}\text{\ensuremath{-}}^{87}\mathrm{Rb}$ and $^{41}\mathrm{K}\text{\ensuremath{-}}^{87}\mathrm{Rb}$ are $1.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}14}$ and $3.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}13}$. Better results can be obtained by improving the wave-front quality and utilizing atom cloud with lower temperature. The analysis and suppression of wave-front-aberration phase noise will be useful for the design of high-precision atom interferometer--based weak-equivalence-principle tests both on ground and in space.