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Out-of-equilibrium steady states of a locally driven lossy qubit array

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cam.issuedOnline2021-02-16
cam.orpheus.counter4
cam.orpheus.successMon Feb 22 07:30:43 GMT 2021 - The item has an open VoR version.
dc.contributor.authorDutta, Shovan
dc.contributor.authorCooper, Nigel
dc.contributor.orcidDutta, Shovan [0000-0002-3534-6920]
dc.contributor.orcidCooper, Nigel [0000-0002-4662-1254]
dc.date.accessioned2021-01-22T00:30:34Z
dc.date.available2021-01-22T00:30:34Z
dc.date.issued2021
dc.description.abstractWe find a rich variety of counterintuitive features in the steady states of a qubit array coupled to a dissipative source and sink at two arbitrary sites, using a master equation approach. We show there are setups where increasing the pump and loss rates establishes long-range coherence. At sufficiently strong dissipation, the source or sink effectively generates correlation between its neighboring sites, leading to a striking density-wave order for a class of “resonant” geometries. This effect can be used more widely to engineer nonequilibrium phases. We show the steady states are generically distinct for hard-core bosons and free fermions, and differ significantly from the ones found before in special cases. They are explained by generally applicable ansatzes for the long-time dynamics at weak and strong dissipation. Our findings are relevant for existing photonic setups.
dc.identifier.doi10.17863/CAM.63682
dc.identifier.eissn2643-1564
dc.identifier.issn2643-1564
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/316573
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.publisher.urlhttps://link.aps.org/doi/10.1103/PhysRevResearch.3.L012016
dc.rightsAttribution 4.0 International (CC BY)
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectOpen quantum systems
dc.subjectNonequilibrium steady states
dc.subjectHard-core bosons
dc.subject1-dimensional spin chains
dc.subjectlocalised dissipation
dc.subjectQuantum Zeno
dc.titleOut-of-equilibrium steady states of a locally driven lossy qubit array
dc.typeArticle
dcterms.dateAccepted2021-01-12
prism.endingPageL012016-7
prism.issueIdentifier1 February 2021
prism.numberL012016
prism.publicationNamePhysical Review Research
prism.startingPageL012016-1
prism.volume3
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P009565/1)
pubs.funder-project-idSimons Foundation (511029)
rioxxterms.licenseref.startdate2021-01-12
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
rioxxterms.typeJournal Article/Review
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1103/PhysRevResearch.3.L012016

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