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Physical Review A

Atomic dark states and motional entanglement in cavity QED

T. A. B. Kennedy, Peng Zhou

Published Nov 13, 2001• 5 citations
Publisher

Abstract

A destructive interference mechanism that protects atomic dark states from entanglement with undesirable motional degrees of freedom for atoms trapped inside an optical cavity is described in a number of examples. Estimates of the motional decoherence rate for dark states are given, and the rates are shown to be slower than naive Lamb-Dicke estimates would suggest. This may be practically useful in the implementation of quantum logic with trapped atoms in optical cavity QED using adiabatic passage techniques.

DOI
10.1103/physreva.64.063805

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A destructive interference mechanism that protects atomic dark states from entanglement with undesirable motional degrees of freedom for atoms trapped inside an optical cavity is described in a number of examples. Estimates of the motional decoherence rate for dark states are given, and the rates are shown to be slower than naive Lamb-Dicke estimates would suggest. This may be practically useful in the implementation of quantum logic with trapped atoms in optical cavity QED using adiabatic passage techniques.
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