Recovering coherence from decoherence: a method of quantum state reconstruction

Details Recovering coherence from decoherence: a method of quantum state reconstruction Recovering coherence from decoherence: a method of quantum state reconstruction

1999-08-11

arxiv.org/abs/quant-ph/9908034v1

Phys. Rev. A 60, 4029 (1999).

Physics

Quantum Physics

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

Scientific paper

10.1103/PhysRevA.60.4029

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.

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