Recovering coherence from decoherence: a method of quantum state reconstruction

Abstract

We present a feasible scheme for reconstructing the quantum state of a field prepared inside a lossy cavity. Quantum coherences are normally destroyed by dissipation, but we show that at zero temperature we are able to retrieve enough information about the initial state, making possible to recover its Wigner function as well as other quasiprobabilities. We provide a numerical simulation of a Schroedinger cat state reconstruction.

8 pages, in RevTeX, 4 figures, accepted for publication in Phys. Rev. A (november 1999)

References in corpus (1)

• Quantum state reconstruction in the presence of dissipation

Cited by in corpus (10)

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• The von Neumann Entropy for Mixed States
• NOON states in cavities
• The Glauber-Sudarshan and Kirkwood-Rihaczec functions
• Pulsed characteristic-function measurement of a thermalizing harmonic oscillator
• Relation between the autocorrelation and Wigner functions
• Direct measurement of the Q-function in a lossy cavity