Quantum spin dimers from chiral dissipation in cold-atom chains

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Ramos, Tomás and Pichler, Hannes and Daley, Andrew J. and Zoller, Peter (2014) Quantum spin dimers from chiral dissipation in cold-atom chains. Physical Review Letters, 113 (23). 237203. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.113.237203)

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Abstract

We consider the nonequilibrium dynamics of a driven dissipative spin chain with chiral coupling to a one-dimensional (1D) bosonic bath, and its atomic implementation with a two-species mixture of cold quantum gases. The reservoir is represented by a spin-orbit coupled 1D quasicondensate of atoms in a magnetized phase, while the spins are identified with motional states of a separate species of atoms in an optical lattice. The chirality of reservoir excitations allows the spins to couple differently to left- and right-moving modes, which in our atomic setup can be tuned from bidirectional to purely unidirectional. Remarkably, this leads to a pure steady state in which pairs of neighboring spins form dimers that decouple from the remainder of the chain. Our results also apply to current experiments with two-level emitters coupled to photonic waveguides.

ORCID iDs

Ramos, Tomás, Pichler, Hannes, Daley, Andrew J. ORCID logoORCID: https://orcid.org/0000-0001-9005-7761 and Zoller, Peter;
  • Item type:Article
    ID code:51144
    Dates:
    Date
    Event
    5 December 2014
    Published
    3 December 2014
    Published Online
    28 October 2014
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:19 Jan 2015 10:01
    Last modified:16 Dec 2024 05:31
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/51144
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