Steady-state atom-light entanglement with engineered spin-orbit coupling
Meng Wang, Pierre Meystre, Wei Zhang, Qiongyi He · Physical Review A · 2016
By driving a Bose-Einstein condensate trapped in a single-mode high-$Q$ optical resonator and coupled to a classical transverse running-wave field above a Dicke-like superradiant phase transition, the resulting cavity field-induced spin-orbit coupling leads to a band structure with doubly degenerate ground states. We show theoretically that the effective bosonic mode defined by interstate hopping can be entangled with the cavity field via the combined effect of spin-orbit coupling and dissipation.