Interference of spin-orbit coupled Bose-Einstein condensates

Abstract

Interference of atomic Bose-Einstein condensates, observed in free expansion experiments, is a basic characteristic of their quantum nature. The ability to produce synthetic spin-orbit coupling in Bose-Einstein condensates has recently opened a new research field. Here we theoretically describe interference of two noninteracting spin-orbit coupled Bose-Einstein condensates in an external synthetic magnetic field. We demonstrate that the spin-orbit and the Zeeman couplings strongly influence the interference pattern determined by the angle between the spins of the condensates, as can be seen in time-of-flight experiments. We show that a quantum backflow, being a subtle feature of the interference, is, nevertheless, robust against the spin-orbit coupling and applied synthetic magnetic field.

published version

References in corpus (9)

• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
• Spin-orbit coupled Bose-Einstein condensates
• Effect of Induced Spin-Orbit Coupling for Atoms via Laser Fields
• Anisotropic dynamics of a spin-orbit coupled Bose-Einstein condensate
• Generalized Rashba spin-orbit coupling for cold atoms
• Spin-orbit coupling and Berry phase with ultracold atoms in 2D optical lattices
• Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling