Spin squeezing in a spin-orbit-coupled Bose-Einstein condensate

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dc.citation.articleNumber023317en_US
dc.citation.issueNumber2en_US
dc.citation.journalTitlePhysical Review Aen_US
dc.citation.volumeNumber102en_US
dc.contributor.authorChen, Lien_US
dc.contributor.authorZhang, Yunboen_US
dc.contributor.authorPu, Hanen_US
dc.contributor.orgRice Center for Quantum Materialsen_US
dc.date.accessioned2020-10-28T14:14:24Zen_US
dc.date.available2020-10-28T14:14:24Zen_US
dc.date.issued2020en_US
dc.description.abstractWe study the spin squeezing in a spin-1/2 Bose-Einstein condensates (BEC) with Raman-induced spin-orbit coupling (SOC). Under the condition of two-photon resonance and weak Raman coupling strength, the system possesses two degenerate ground states, using which we construct an effective two-mode model. The Hamiltonian of the two-mode model takes the form of the one-axis-twisting Hamiltonian, which is known to generate spin squeezing. More importantly, we show that the SOC provides a convenient control knob to adjust the spin nonlinearity responsible for spin squeezing. Specifically, the spin nonlinearity strength can be tuned to be comparable to the two-body density-density interaction, and hence is much larger than the intrinsic spin-dependent interaction strength in conventional two-component BEC systems such as 87Rb and 23Na in the absence of the SOC. We confirm the spin squeezing by carrying out a fully beyond-mean-field numerical calculation using the truncated Wigner method. Additionally, the experimental implementation is also discussed.en_US
dc.identifier.citationChen, Li, Zhang, Yunbo and Pu, Han. "Spin squeezing in a spin-orbit-coupled Bose-Einstein condensate." <i>Physical Review A,</i> 102, no. 2 (2020) American Physical Society: https://doi.org/10.1103/PhysRevA.102.023317.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.102.023317en_US
dc.identifier.urihttps://hdl.handle.net/1911/109453en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleSpin squeezing in a spin-orbit-coupled Bose-Einstein condensateen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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