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Scalable Probes of Measurement-Induced Criticality

Author(s): Gullans, Michael J; Huse, David A

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dc.contributor.authorGullans, Michael J-
dc.contributor.authorHuse, David A-
dc.date.accessioned2022-01-25T15:02:59Z-
dc.date.available2022-01-25T15:02:59Z-
dc.date.issued2020-08-14en_US
dc.identifier.citationGullans, Michael J, Huse, David A. (2020). Scalable Probes of Measurement-Induced Criticality. PHYSICAL REVIEW LETTERS, 125 (10.1103/PhysRevLett.125.070606en_US
dc.identifier.issn0031-9007-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1251fk0r-
dc.description.abstractWe uncover a local order parameter for measurement-induced phase transitions: the average entropy of a single reference qubit initially entangled with the system. Using this order parameter, we identify scalable probes of measurement-induced criticality that are immediately applicable to advanced quantum computing platforms. We test our proposal on a 1 + 1 dimensional stabilizer circuit model that can be classically simulated in polynomial time. We introduce the concept of a “decoding light cone” to establish the local and efficiently measurable nature of this probe. We also estimate bulk and surface critical exponents for the transition. Developing scalable probes of measurement-induced criticality in more general models may be a useful application of noisy intermediate scale quantum devices, as well as point to more efficient realizations of fault-tolerant quantum computation.en_US
dc.language.isoen_USen_US
dc.relation.ispartofPHYSICAL REVIEW LETTERSen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleScalable Probes of Measurement-Induced Criticalityen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1103/PhysRevLett.125.070606-
dc.date.eissued2020-08-14en_US
dc.identifier.eissn1079-7114-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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