Spin-Tensor-Momentum-Coupled Bose-Einstein Condensates

Date

2017-11-06

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Publisher

American Physical Society

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Abstract

The recent experimental realization of spin-orbit coupling for ultracold atomic gases provides a powerful platform for exploring many interesting quantum phenomena. In these studies, spin represents the spin vector (spin 1/2 or spin 1) and orbit represents the linear momentum. Here we propose a scheme to realize a new type of spin-tensor-momentum coupling (STMC) in spin-1 ultracold atomic gases. We study the ground state properties of interacting Bose-Einstein condensates with STMC and find interesting new types of stripe superfluid phases and multicritical points for phase transitions. Furthermore, STMC makes it possible to study quantum states with dynamical stripe orders that display density modulation with a long tunable period and high visibility, paving the way for the direct experimental observation of a new dynamical supersolidlike state. Our scheme for generating STMC can be generalized to other systems and may open the door for exploring novel quantum physics and device applications.

Description

Includes supplementary material

Keywords

Bose-Einstein condensation, Gases, Momentum (Mechanics), Statistical mechanics, Calculus of tensors, Critical point, Quantum theory

item.page.sponsorship

Air Force Office of Scientific Research (FA9550-16-1-0387), National Science Foundation (PHY-1505496), and Army Research Office (W911NF- 17-1-0128).

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©2017 American Physical Society

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