Spin exchange-induced spin-orbit coupling in a superuid mixture
| Autor: | Han Pu, Li Chen, Yunbo Zhang, Chuanzhou Zhu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Work (thermodynamics) FOS: Physical sciences Spin–orbit interaction 01 natural sciences Molecular physics 010305 fluids & plasmas Superfluidity Coupling (physics) symbols.namesake Raman laser Quantum Gases (cond-mat.quant-gas) 0103 physical sciences symbols 010306 general physics Spin (physics) Raman spectroscopy Condensed Matter - Quantum Gases Phase diagram |
| Popis: | We investigate the ground-state properties of a dual-species spin-1/2 Bose-Einstein condensate. One of the species is subjected to a pair of Raman laser beams that induces spin-orbit (SO) coupling, whereas the other species is not coupled to the Raman laser. In certain limits, analytical results can be obtained. It is clearly shown that, through the inter-species spin-exchange interaction, the second species also exhibits SO coupling. This mixture system displays a very rich phase diagram, with many of the phases not present in an SO coupled single-species condensate. Our work provides a new way of creating SO coupling in atomic quantum gases, and opens up a new avenue of research in SO coupled superfluid mixtures. From a practical point of view, the spin exchange-induced SO coupling may overcome the heating issue for certain atomic species when subjected to the Raman beams. 6 pages, 3 figures, accepted for publication as a Rapid Commun. in PRA |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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