Approach for making visible and stable stripes in a spin-orbit-coupled Bose-Einstein superfluid

Abstract

The striped phase exhibited by a spin-$1/2$ Bose-Einstein condensate with spin-orbit coupling is characterized by the spontaneous breaking of two continuous symmetries: gauge and translational symmetry. This is a peculiar feature of supersolids and is the consequence of interaction effects. We propose an approach to produce striped configurations with high-contrast fringes, making their experimental detection in atomic gases a realistic perspective. Our approach, whose efficiency is directly confirmed by three-dimensional Gross-Pitaevskii simulations, is based on the space separation of the two spin components into a two-dimensional bilayer configuration, causing the reduction of the effective interspecies interaction and the increase of the stability of the striped phase. We also explore the effect of a $\pi /2$ Bragg pulse, causing the increase of the fringe wavelength, and of a $\pi /2$ rf pulse, revealing the coherent nature of the order parameter in the spin channel.

5 pages, 3 figures

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• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
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Cited by in corpus (9)

• Rotating a supersolid dipolar gas
• Striped Ferronematic ground states in a spin-orbit coupled $S=1$ Bose gas
• Effects of Spin-Orbit Coupling on Jaynes-Cummings and Tavis-Cummings Models
• Quantum phases in spin-orbit-coupled Floquet spinor Bose gases
• Quantum phases and collective excitations of a spin-orbit-coupled Bose-Einstein condensate in a one-dimensional optical lattice
• Metastable supersolid in spin-orbit coupled Bose-Einstein condensates
• Ground states of a Bose-Einstein Condensate in a one-dimensional laser-assisted optical lattice
• Flat-band-induced superconductivity in synthetic bilayer optical lattices
• One dimensional phase transition problem modelling striped spin orbit coupled Bose-Einstein condensates