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Defects in quantum computers

Defects in quantum computers

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dc.contributor.author Gardas, Bartłomiej [SAP14024945] pl
dc.contributor.author Dziarmaga, Jacek [SAP11016123] pl
dc.contributor.author Zurek, Wojciech H. pl
dc.contributor.author Zwolak, Michael pl
dc.date.accessioned 2018-08-29T12:27:42Z
dc.date.available 2018-08-29T12:27:42Z
dc.date.issued 2018 pl
dc.identifier.uri https://ruj.uj.edu.pl/xmlui/handle/item/56530
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/pl/legalcode *
dc.title Defects in quantum computers pl
dc.type JournalArticle pl
dc.abstract.en The shift of interest from general purpose quantum computers to adiabatic quantum computing or quantum annealing calls for a broadly applicable and easy to implement test to assess how quantum or adiabatic is a specific hardware. Here we propose such a test based on an exactly solvable many body system–the quantum Ising chain in transverse field–and implement it on the D-Wave machine. An ideal adiabatic quench of the quantum Ising chain should lead to an ordered broken symmetry ground state with all spins aligned in the same direction. An actual quench can be imperfect due to decoherence, noise, flaws in the implemented Hamiltonian, or simply too fast to be adiabatic. Imperfections result in topological defects: Spins change orientation, kinks punctuating ordered sections of the chain. The number of such defects quantifies the extent by which the quantum computer misses the ground state, and is, therefore, imperfect. pl
dc.description.volume 8 pl
dc.identifier.doi 10.1038/s41598-018-22763-2 pl
dc.identifier.eissn 2045-2322 pl
dc.title.journal Scientific Reports pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 4539 pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / OP pl

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Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa