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Why momentum width matters for atom interferometry with Bragg pulses.

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Title: Why momentum width matters for atom interferometry with Bragg pulses.
Authors: Szigeti, S. S.1 stuart.szigeti@anu.edu.au, Debs, J. E.1, Hope, J. J.1, Robins, N. P.1, Close, J. D.1
Source: New Journal of Physics. 2012, Vol. 14 Issue 2, p1-23. 23p.
Subjects: Momentum (Mechanics), Atom interferometers, Interferometry, Bragg's law (Physics), Momentum transfer, Two-photon absorbing materials
Abstract: We theoretically consider the effect of the atomic source's momentum width on the efficiency of Bragg mirrors and beamsplitters and, more generally, on the phase sensitivity of Bragg pulse atom interferometers. By numerical optimization, we show that an atomic cloud's momentum width places a fundamental upper bound on the maximum transfer efficiency of a Bragg mirror pulse, and furthermore limits the phase sensitivity of a Bragg pulse atom interferometer. We quantify these momentum width effects, and precisely compute how mirror efficiencies and interferometer phase sensitivities vary as functions of Bragg order and source type. Our results and methodology allow for an efficient optimization of Bragg pulses and the comparison of different atomic sources, and will help in the design of large momentum transfer Bragg mirrors and beamsplitters for use in atom-based inertial sensors. [ABSTRACT FROM AUTHOR]
Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="DE" term="%22Momentum+%28Mechanics%29%22">Momentum (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Atom+interferometers%22">Atom interferometers</searchLink><br /><searchLink fieldCode="DE" term="%22Interferometry%22">Interferometry</searchLink><br /><searchLink fieldCode="DE" term="%22Bragg's+law+%28Physics%29%22">Bragg's law (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Momentum+transfer%22">Momentum transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Two-photon+absorbing+materials%22">Two-photon absorbing materials</searchLink>
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  Data: We theoretically consider the effect of the atomic source's momentum width on the efficiency of Bragg mirrors and beamsplitters and, more generally, on the phase sensitivity of Bragg pulse atom interferometers. By numerical optimization, we show that an atomic cloud's momentum width places a fundamental upper bound on the maximum transfer efficiency of a Bragg mirror pulse, and furthermore limits the phase sensitivity of a Bragg pulse atom interferometer. We quantify these momentum width effects, and precisely compute how mirror efficiencies and interferometer phase sensitivities vary as functions of Bragg order and source type. Our results and methodology allow for an efficient optimization of Bragg pulses and the comparison of different atomic sources, and will help in the design of large momentum transfer Bragg mirrors and beamsplitters for use in atom-based inertial sensors. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of New Journal of Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1088/1367-2630/14/2/023009
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        Text: English
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      – SubjectFull: Atom interferometers
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      – SubjectFull: Two-photon absorbing materials
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