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dc.contributor.author Novais, E
dc.contributor.author Mucciolo, ER
dc.contributor.author Baranger, HU
dc.date.accessioned 2011-04-15T16:46:47Z
dc.date.issued 2010-08-31
dc.identifier.citation Physical Review A - Atomic, Molecular, and Optical Physics, 2010, 82 (2)
dc.identifier.issn 1050-2947
dc.identifier.uri http://hdl.handle.net/10161/3348
dc.description.abstract We obtain an upper bound on the time available for quantum computation for a given quantum computer and decohering environment with quantum error correction implemented. First, we derive an explicit quantum evolution operator for the logical qubits and show that it has the same form as that for the physical qubits but with a reduced coupling strength to the environment. Using this evolution operator, we find the trace distance between the real and ideal states of the logical qubits in two cases. For a super-Ohmic bath, the trace distance saturates, while for Ohmic or sub-Ohmic baths, there is a finite time before the trace distance exceeds a value set by the user. © 2010 The American Physical Society.
dc.language.iso en_US en_US
dc.relation.ispartof Physical Review A - Atomic, Molecular, and Optical Physics
dc.relation.isversionof 10.1103/PhysRevA.82.020303
dc.title Bound on quantum computation time: Quantum error correction in a critical environment
dc.type Journal Article
dc.description.version Version of Record en_US
duke.date.pubdate 2010-8-31 en_US
duke.description.endpage 20303 en_US
duke.description.issue 2 en_US
duke.description.startpage 20303 en_US
duke.description.volume 82 en_US
dc.relation.journal Physical Review a en_US
pubs.issue 2
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Trinity College of Arts & Sciences
pubs.organisational-group /Duke/Trinity College of Arts & Sciences/Physics
pubs.publication-status Published
pubs.volume 82
dc.identifier.eissn 1094-1622

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