Density profiles and collective modes of a Bose-Einstein condensate with light-induced spin-orbit coupling

Abstract

The phases of a Bose-Einstein condensate (BEC) with light-induced spin-orbit coupling (SOC) are studied within the mean-field approximation. The mixed BEC phase, in which the system condenses in a superposition of two plane wave states, is found to be stable for sufficiently small light-atom coupling, becoming unstable in a continuous fashion with increasing light-atom coupling. The structure of the phase diagram at fixed chemical potential for bosons with SOC is shown to imply an unusual density dependence for a trapped mixed BEC phase, with the density of one dressed spin state increasing with increasing radius, providing a unique experimental signature of this state. The collective Bogoliubov sound mode is shown to also provide a signature of the mixed BEC state, vanishing as the boundary to the regime of phase separation is approached.

9 pages, 4 figures. Published Version

References in corpus (11)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Bose-Einstein condensation of atoms in a uniform potential
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Observation of Zitterbewegung in a spin-orbit coupled Bose-Einstein condensate
• Spin-orbit coupled Bose-Einstein condensates
• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Direct observation of zitterbewegung in a Bose-Einstein condensate
• Properties of Bose Gases with Raman-Induced Spin-Orbit Coupling
• Emergent patterns in a spin-orbit coupled spin-2 Bose-Einstein condensate

Cited by in corpus (13)

• Vortex dynamics in spin-orbit coupled Bose-Einstein condensates
• Phase separation in a spin-orbit coupled Bose-Einstein condensate
• Dynamics of spin-orbit coupled Bose-Einstein condensates in a random potential
• Thermal Phase Transitions of Strongly Correlated Bosons with Spin-Orbit Coupling
• Enhanced stripe phases in spin-orbit-coupled Bose-Einstein condensates in ring cavities
• Spontaneous symmetry breaking in a spin-orbit coupled $f=2$ spinor condensate
• Spin-orbit-coupled Bose-Einstein-condensed atoms confined in annular potentials
• Dynamics of a macroscopic spin qubit in spin-orbit coupled Bose-Einstein condensates
• Dynamics of quantized vortices in Bose-Einstein condensates with laser-induced spin-orbit coupling
• Macroscopic random Paschen-Back effect in ultracold atomic gases
• Vortices and vortex states in Rashba spin-orbit-coupled condensates
• (2+1)$-dimensional sonic black hole from spin-orbit coupled Bose-Einstein condensate and its analogue Hawking radiation
• Magnetic and nematic phases in a Weyl type spin-orbit-coupled spin-1 Bose gas