Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:quant-ph/0002079 · Journal of Modern Optics

Cavity field reconstruction at finite temperature

H. Moya-Cessa, A. Vidiella-Barranco, P. Tombesi, J. A. Roversi

Published Oct 1, 2000• 1 citation
arXivHTMLPDF

Abstract

We present a scheme to reconstruct the quantum state of a field prepared inside a lossy cavity at finite temperature. Quantum coherences are normally destroyed by the interaction with an environment, but we show that it is possible to recover complete information about the initial state (before interaction with its environment), making possible to reconstruct any s-para-metrized quasiprobability distribution, in particular, the Wigner function.

DOI
10.1080/09500340008235135

Related papers

On the possibility of field-state reconstruction in non-ideal cavities

H. M. Moya-Cessa

We present a scheme to reconstruct the quantum state of a field prepared inside a lossy cavity at finite temperature. Quantum coherences are normally destroyed by the interaction with an environment, but we show that it is possible to recover complete information about the initial state (before dissipation), making possible to reconstruct its Wigner function.

AIP conference proceedings•Jan 1, 2000•0 citations

Cavity Field Reconstruction at Finite Temperature

H. M. Moya-Cessa, A. Vidiella-Barranco, P. Tombesi +1 more

We present a scheme to reconstruct the quantum state of a field preparedinside a lossy cavity at finite temperature. Quantum coherences are normallydestroyed by the interaction with an environment, but we show that it ispossible to recover complete information about the initial state (beforeinteraction with its environment), making possible to reconstruct any$s$-parametrized quasiprobability distribution, in particular, the Wignerfunction.

•Jan 1, 2000•1 citation

Recovering coherence from decoherence: A method of quantum-state reconstruction

H. M. Moya-Cessa, José Antonio Roversi, S. M. Dutra +1 more

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 Schr\"odinger cat-state reconstruction.

arXiv:quant-ph/9908034•Physical Review A•Nov 1, 1999•32 citations

Measuring the quantum state of the electromagnetic field at finite temperature

Raúl Juárez-Amaro, H. M. Moya-Cessa

Abstract We show that it is possible to reconstruct the quantum state of light in a cavity subject to dissipation at finite temperature. By passing atoms through the cavity it is shown that the decay does not prevent the measurement of s-parametrized quasiprobability distributions. Because such distributions contain whole information about the initial quantized field, it is possible to recover its complete information.

Physica Scripta•Nov 3, 2023•0 citations

Quantum state reconstruction in the presence of dissipation

H. M. Moya-Cessa, S. M. Dutra, José Antonio Roversi +1 more

We propose a realistic scheme to determine the quantum state of a single-mode cavity field even after it has started to decay due to the coupling with an environment. Although dissipation destroys quantum coherences, we show that at zero temperature enough information about the initial state remains, in an observable quantity, to allow the reconstruction of its Wigner function. 42.50.-p, 03.65.Bz, 42.50.Dv.

arXiv:quant-ph/9907046•Journal of Modern Optics•Mar 1, 1999•37 citations

Scheme for direct observation of the Wigner characteristic function in cavity QED

M. S. Kim, G. Antesberger, C. T. Bodendorf +1 more

We suggest a quantum state reconstruction scheme. Our proposal is applicable to the field inside a microwave cavity as well as to the harmonic motion of a trapped atom. It will be shown that the inversion of two-level atoms after a resonant interaction with a coherently displaced quantum state is directly related to the Wigner characteristic function of the initial state. This method neither requires the preparation of atoms in a quantum superposition of the upper and lower energy levels nor heavy numerical processing of the measured data. We demonstrate the reconstruction scheme for the example of a Schr\"odinger-cat superposition state.

Physical Review A•Jul 1, 1998•82 citations
We present a scheme to reconstruct the quantum state of a field prepared inside a lossy cavity at finite temperature. Quantum coherences are normally destroyed by the interaction with an environment, but we show that it is possible to recover complete information about the initial state (before interaction with its environment), making possible to reconstruct any s-para-metrized quasiprobability distribution, in particular, the Wigner function.
We present a scheme to reconstruct the quantum state of a field preparedinside a lossy cavity at finite temperature. Quantum coherences are normallydestroyed by the interaction with an environment, but we show that it ispossible to recover complete information about the initial state (beforeinteraction with its environment), making possible to reconstruct anysss-parametrized quasiprobability distribution, in particular, the Wignerfunction.
We suggest a quantum state reconstruction scheme. Our proposal is applicable to the field inside a microwave cavity as well as to the harmonic motion of a trapped atom. It will be shown that the inversion of two-level atoms after a resonant interaction with a coherently displaced quantum state is directly related to the Wigner characteristic function of the initial state. This method neither requires the preparation of atoms in a quantum superposition of the upper and lower energy levels nor heavy numerical processing of the measured data. We demonstrate the reconstruction scheme for the example of a Schr\"odinger-cat superposition state.