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

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.

Automated summary

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.