Matches in SemOpenAlex for { <https://semopenalex.org/work/W1997472636> ?p ?o ?g. }
- W1997472636 abstract "Quantum systems carry information. Quantum theory supports at least two distinct kinds of information (classical and quantum), and a variety of different ways to encode and preserve information in physical systems. A system's ability to carry information is constrained and defined by the noise in its dynamics. This paper introduces an operational framework, using information-preserving structures, to classify all the kinds of information that can be perfectly (i.e., with zero error) preserved by quantum dynamics. We prove that every perfectly preserved code has the same structure as a matrix algebra, and that preserved information can always be corrected. We also classify distinct operational criteria for preservation (e.g., ``noiseless,'' ``unitarily correctible,'' etc.) and introduce two natural criteria for measurement-stabilized and unconditionally preserved codes. Finally, for several of these operational criteria, we present efficient (polynomial in the state-space dimension) algorithms to find all of a channel's information-preserving structures." @default.
- W1997472636 created "2016-06-24" @default.
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- W1997472636 creator A5036492578 @default.
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- W1997472636 date "2010-12-07" @default.
- W1997472636 modified "2023-10-16" @default.
- W1997472636 title "Information-preserving structures: A general framework for quantum zero-error information" @default.
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- W1997472636 doi "https://doi.org/10.1103/physreva.82.062306" @default.
- W1997472636 hasPublicationYear "2010" @default.
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