Immunizing quantum information against decoherence via decoherence-free environments

We construct decoherence-free environments (DFEs) within the Hamiltonian formalism and derive an exact equation of motion for a quantum subsystem interacting with a DFE. We discuss the feasibility of DFEs as a means to protect the quantum information in subsystem degrees of freedom. By studying a nu...

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Bibliographic Details
Published inJournal of physics. A, Mathematical and theoretical Vol. 44; no. 13; pp. 135301 - 15
Main Authors Çetinbaş, Murat, Leach, Gary W
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2011
IOP
Subjects
Degrees of freedom
Dynamic tests
Equations of motion
Exact sciences and technology
Feasibility
Formalism
Incoherence
Joining
Mathematical analysis
Physics
Degrees of freedom
Quantum entanglement
Dynamics
Hamiltonians
Quantum decoherence
Quantum information
Equations of motion
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Summary:We construct decoherence-free environments (DFEs) within the Hamiltonian formalism and derive an exact equation of motion for a quantum subsystem interacting with a DFE. We discuss the feasibility of DFEs as a means to protect the quantum information in subsystem degrees of freedom. By studying a number of examples we show how to avoid entanglement-induced decoherence as well as decoherence induced by incoherence dynamics in a quantum subsystem coupled to a DFE.
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ISSN:1751-8121
1751-8113
1751-8121
DOI:10.1088/1751-8113/44/13/135301