4.8 Article

Soliton Interferometry with Very Narrow Barriers Obtained from Spatially Dependent Dressed States

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PHYSICAL REVIEW LETTERS
卷 129, 期 4, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.040401

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  1. U.K. EPSRC

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This article investigates a scheme for interferometric measurement using bright solitons in atomic Bose-Einstein condensates. The scheme uses the geometric scalar potential experienced by atoms in a spatially dependent dark state to overcome the limitation of barrier width in interferometric measurement. Numerical simulations are conducted to probe the effects of deviations from the ideal configuration.
Bright solitons in atomic Bose-Einstein condensates are strong candidates for high precision matter -wave interferometry, as their inherent stability against dispersion supports long interrogation times. An analog to a beam splitter is then a narrow potential barrier. A very narrow barrier is desirable for interferometric purposes, but in a typical realization using a blue-detuned optical dipole potential, the width is limited by the laser wavelength. We investigate a soliton interferometry scheme using the geometric scalar potential experienced by atoms in a spatially dependent dark state to overcome this limit. We propose a possible implementation and numerically probe the effects of deviations from the ideal configuration.

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