Publication: Relative phase for a quantum field interacting with a two-level system
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1997-07
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American Physical Society
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Abstract
Several quantum descriptions of the relative phase between an atomic dipole and a one-mode electromagnetic field are examined. Positive-operator measures for this variable are derived from dipole and field-phase formalisms. They are analyzed and compared with an operator defined by a polar decomposition. Some examples of time evolution are discussed.
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© 1997 The American Physical Society.
We would like to thank Professor J. Peřina, Professor V. Peřinová, and Dr. A. Lukš for discussions. It is a pleasure to acknowledge S. Sweeney for a careful reading of the manuscript.
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