Relationship between spin squeezing and single-particle coherence in two-component Bose-Einstein condensates with Josephson coupling

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dc.creatorJin, G. R.
dc.creatorLaw, C. K.
dc.date2008-08-14
dc.date2009-01-08
dc.date.accessioned2026-07-07T12:26:58Z
dc.date.available2026-07-07T12:26:58Z
dc.descriptionWe investigate spin squeezing of a two-mode boson system with a Josephson coupling. An exact relation between the squeezing and the single-particle coherence at the maximal-squeezing time is discovered, which provides a more direct way to measure the squeezing by readout the coherence in atomic interference experiments. We prove explicitly that the strongest squeezing is along the $J_z$ axis, indicating the appearance of atom number-squeezed state. Power laws of the strongest squeezing and the optimal coupling with particle number $N$ are obtained based upon a wide range of numerical simulations.
dc.description4 figures, revtex4, new refs. are added
dc.identifierhttps://arxiv.org/abs/0808.1957
dc.identifierhttp://arxiv.org/abs/0808.1957
dc.identifierPhys. Rev. A 78, 063620 (2008)
dc.identifierdoi:10.1103/PhysRevA.78.063620
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215053
dc.subjectOther Condensed Matter
dc.subjectAtomic Physics
dc.subjectQuantum Physics
dc.titleRelationship between spin squeezing and single-particle coherence in two-component Bose-Einstein condensates with Josephson coupling
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