Spatial coherence of spin-orbit-coupled Bose gases

Abstract

Spin-orbit-coupled Bose-Einstein condensates (SOBECs) exhibit two new phases of matter, now known as the stripe and plane-wave phases. When two interacting spin components of a SOBEC spatially overlap, density modulations with periodicity given by the spin-orbit coupling strength appear. In equilibrium, these components fully overlap in the miscible stripe phase, and overlap only in a domain wall in the immiscible plane-wave phase. Here we probe the density modulation present in any overlapping region with optical Bragg scattering, and observe the sudden drop of Bragg scattering as the overlapping region shrinks. Using an atomic analogue of the Talbot effect, we demonstrate the existence of long-range coherence between the different spin components in the stripe phase and surprisingly even in the phase-separated plane-wave phase.

References in corpus (6)

• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• Observation of the supersolid stripe phase in spin-orbit coupled Bose-Einstein condensates
• Observation of antiferromagnetic correlations in the Hubbard model with ultracold atoms
• Spin-orbit coupled Bose-Einstein condensates
• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Atom-light crystallization of BECs in multimode cavities: Nonequilibrium classical and quantum phase transitions, emergent lattices, supersolidity, and frustration

Cited by in corpus (6)

• Multi-ring, stripe, and super-lattice solitons in a spin-orbit coupled spin-1 condensate
• Symbiotic solitons in a quasi-one- and quasi-two-dimensional spin-1 condensates
• Supersolid-like solitons in spin-orbit coupled spin-2 condensate
• Metastable supersolid in spin-orbit coupled Bose-Einstein condensates
• Spontaneous spatial order in two-dimensional ferromagnetic spin-orbit coupled uniform spin-1 condensate solitons
• Supersolid-like solitons in two-dimensional nonmagnetic spin-orbit coupled spin-1 and spin-2 condensates