Criteria for dynamically stable decoherence-free subspaces and incoherently generated coherences

Raisa I. Karasik, Karl-Peter Marzlin, Barry C. Sanders, K. Birgitta Whaley

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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.
Original languageEnglish
Pages (from-to)052301-1-052301-12
Number of pages12
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume77
Issue number5
DOIs
Publication statusPublished - 2008

Bibliographical note

Raisa I. Karasik, Karl-Peter Marzlin, Barry C. Sanders, and K. Birgitta Whaley, Physical review A, Vol. 77, Iss. 5, 052301 (2008). Copyright 2008 by the American Physical Society. The original article can be found at http://dx.doi.org/10.1103/PhysRevA.77.052301

Keywords

  • eigenvalues and eigenfunctions
  • master equation
  • quantum theory

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