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DECOHERENCE OF NUMBER STATES IN PHASE-SENSITIVE RESERVOIRS

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S. Allende, 84081 Baronissi (SA), Italy

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S. DE SIENA

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S. Allende, 84081 Baronissi (SA), Italy

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F. ILLUMINATI

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S. Allende, 84081 Baronissi (SA), Italy

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https://doi.org/10.1142/S0217984904007177Cited by:5 (Source: Crossref)

Abstract

The non-unitary evolution of initial number states in general Gaussian environments is solved analytically. Decoherence in the channels is quantified by determining explicitly the purity of the state at any time. The influence of the squeezing of the bath on decoherence is discussed. The behavior of coherent superpositions of number states is addressed as well.

Keywords:

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