Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorDogra, Shrutien_US
dc.contributor.authorMelnikov, Artem A.en_US
dc.contributor.authorParaoanu, Gheorghe Sorinen_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorCentre of Excellence in Quantum Technology, QTFen
dc.contributor.groupauthorSuperconducting Qubits and Circuit QEDen
dc.contributor.organizationAalto Universityen_US
dc.date.accessioned2021-03-22T07:05:48Z
dc.date.available2021-03-22T07:05:48Z
dc.date.issued2021-12en_US
dc.description| openaire: EC/H2020/862644/EU//QUARTET
dc.description.abstractThe observation of genuine quantum effects in systems governed by non-Hermitian Hamiltonians has been an outstanding challenge in the field. Here we simulate the evolution under such Hamiltonians in the quantum regime on a superconducting quantum processor by using a dilation procedure involving an ancillary qubit. We observe the parity-time (PT)-symmetry breaking phase transition at the exceptional points, obtain the critical exponent, and show that this transition is associated with a loss of state distinguishability. In a two-qubit setting, we show that the entanglement can be modified by local operations.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationDogra, S, Melnikov, A A & Paraoanu, G S 2021, ' Quantum simulation of parity-time symmetry breaking with a superconducting quantum processor ', Communications Physics, vol. 4, no. 1, 26 . https://doi.org/10.1038/s42005-021-00534-2en
dc.identifier.doi10.1038/s42005-021-00534-2en_US
dc.identifier.issn2399-3650
dc.identifier.otherPURE UUID: 2613c8de-d3a1-4501-b8f5-2b32cba67a10en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/2613c8de-d3a1-4501-b8f5-2b32cba67a10en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85101439201&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/56861092/Dogra_Quantum_Simulation.s42005_021_00534_2_1.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/103164
dc.identifier.urnURN:NBN:fi:aalto-202103222442
dc.language.isoenen
dc.publisherNature Publishing Group
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/862644/EU//QUARTETen_US
dc.relation.ispartofseriesCommunications physicsen
dc.relation.ispartofseriesVolume 4, issue 1en
dc.rightsopenAccessen
dc.titleQuantum simulation of parity-time symmetry breaking with a superconducting quantum processoren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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