Criteria for dynamically stable decoherence-free subspaces and incoherently generated coherences
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Marzlin, Karl-Peter
Sanders, Barry C.
Birgitta Whaley, K.
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Abstract
We present a detailed analysis of decoherence free subspaces and develop a rigorous theory that provides necessary and sufficient conditions for dynamically stable decoherence free subspaces. This allows us to identify a special class of decoherence free states which rely on incoherent generation of coherences. We provide examples of physical systems that support such states. Our approach employs Markovian master equations and applies primarily to finite-dimensional quantum systems.
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Physical Review A
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77
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5
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© 2008 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
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Quantum Information, Computation and Communication
Mathematical Sciences
Physical Sciences
Chemical Sciences