Inertial sensing with point-source atom interferometry for interferograms with less than one fringe

AbstractAtom interferometry is one of the most promising technologies for high precision measurements. It has the potential to revolutionise many different sectors, such as navigation and positioning, resource exploration, geophysical studies, and fundamental physics. After decades of research in the field of cold atoms, the technology has reached a stage where commercialisation of cold atom interferometers has become possible. This article describes recent developments, challenges, and prospects for quantum sensors for inertial sensing based on cold atom interferometry techniques.

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Limitations on maximum achievable enhancement in sensitivity using large momentum transfer for point source atom interferometry

Optical and Quantum Sensing and Precision Metrology ◽

10.1117/12.2588300 ◽

2021 ◽

Author(s):

Jinyang Li ◽

Gregorio R. M. da Silva ◽

Wayne C. Huang ◽

Mohamed Fouda ◽

Jason Bonacum ◽

...

Keyword(s):

Point Source ◽

Momentum Transfer ◽

Atom Interferometry ◽

Large Momentum Transfer ◽

Large Momentum

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Large momentum transfer point source atom interferometry (Conference Presentation)

Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II ◽

10.1117/12.2552627 ◽

2020 ◽

Author(s):

Jinyang Li

Keyword(s):

Point Source ◽

Momentum Transfer ◽

Atom Interferometry ◽

Large Momentum Transfer ◽

Large Momentum

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Point source atom interferometry with a cloud of finite size

Applied Physics Letters ◽

10.1063/1.4961527 ◽

2016 ◽

Vol 109 (7) ◽

pp. 071113 ◽

Cited By ~ 21

Author(s):

Gregory W. Hoth ◽

Bruno Pelle ◽

Stefan Riedl ◽

John Kitching ◽

Elizabeth A. Donley

Keyword(s):

Point Source ◽

Finite Size ◽

Atom Interferometry

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High Sensitivity Multi-Axes Rotation Sensing Using Large Momentum Transfer Point Source Atom Interferometry

Atoms ◽

10.3390/atoms9030051 ◽

2021 ◽

Vol 9 (3) ◽

pp. 51

Author(s):

Jinyang Li ◽

Gregório R. M. da Silva ◽

Wayne C. Huang ◽

Mohamed Fouda ◽

Jason Bonacum ◽

...

Keyword(s):

Point Source ◽

Momentum Transfer ◽

Cold Atoms ◽

Classical Model ◽

Center Of Mass ◽

High Sensitivity ◽

Atom Interferometry ◽

Large Momentum Transfer ◽

Large Momentum ◽

Initial Size

A point source interferometer (PSI) is a device where atoms are split and recombined by applying a temporal sequence of Raman pulses during the expansion of a cloud of cold atoms behaving approximately as a point source. The PSI can work as a sensitive multi-axes gyroscope that can automatically filter out the signal from accelerations. The phase shift arising from the rotations is proportional to the momentum transferred to each atom from the Raman pulses. Therefore, by increasing the momentum transfer, it should be possible to enhance the sensitivity of the PSI. Here, we investigate the degree of enhancement in sensitivity that could be achieved by augmenting the PSI with large momentum transfer (LMT) employing a sequence of many Raman pulses with alternating directions. We analyze how factors such as Doppler detuning, spontaneous emission, and the finite initial size of the atomic cloud compromise the advantage of LMT and how to find the optimal momentum transfer under these limitations, with both the semi-classical model and a model under which the motion of the center of mass of each atom is described quantum mechanically. We identify a set of realistic parameters for which LMT can improve the PSI by a factor of nearly 40.

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