Quantum optics seminar
How to make narrow barriers for matter-wave bright soliton interferometry
Prof. Simon Gardiner
Durham University
Abstract
Zoom link: https://us02web.zoom.us/j/87872267920
Abstract:
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 for these solitons is then a narrow potential barrier. A very narrow barrier is desirable for interferometric purposes, but in a typical realisation using a blue-detuned optical dipole potential, the width wavelength-limited. We investigate a soliton interferometry scheme using the geometric scalar potential experienced by atoms in a spatially dependent dark state, using two laser beams and a three-level atom in a Lambda configuration to overcome this limit. We propose a possible implementation and numerically probe the effects of deviations from the ideal configuration.
[See also https://arxiv.org/abs/2104.11511]
Abstract:
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 for these solitons is then a narrow potential barrier. A very narrow barrier is desirable for interferometric purposes, but in a typical realisation using a blue-detuned optical dipole potential, the width wavelength-limited. We investigate a soliton interferometry scheme using the geometric scalar potential experienced by atoms in a spatially dependent dark state, using two laser beams and a three-level atom in a Lambda configuration to overcome this limit. We propose a possible implementation and numerically probe the effects of deviations from the ideal configuration.
[See also https://arxiv.org/abs/2104.11511]