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/9907046 · Journal of Modern Optics

Quantum state reconstruction in the presence of dissipation

H. M. Moya-Cessa, S. M. Dutra, José Antonio Roversi, A. Vidiella-Barranco

Published Mar 1, 1999• 37 citations
arXivHTMLPDF

Abstract

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.

DOI
10.1080/09500349908231283

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

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

Cavity field reconstruction at finite temperature

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

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.

arXiv:quant-ph/0002079•Journal of Modern Optics•Oct 1, 2000•1 citation

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

Función de Wigner y Decoherencia Cuántica para Sistemas Átomo-Campo en Cavidades QED

Juan Pablo Cuartas, Herbert Vinck Posada, Boris A. Rodríguez

ABSTRACT: The processes of quantum decoherence in QED cavities have been extensively studied in the last decade, both experimentally by Haroche, Raimond et. al., as theoretically by Nemes, Davidovich et. to the. We present here the dynamics of the Wigner function for a system consisting of a two-level atom and a cavity in a dissipative environment, using a numerical integration scheme that allows us to consider initial Squeezed and Schrodinger's Cat States. The interaction between the atom and the single-mode field is considered by a dispersive model, that is, the interaction in the Hamiltonian of Jaynes-Cummings appears as a small disturbance. The interest is focused both on the quantum characteristics of the dispersive approach (preparation of mesoscopic states) and on the aspects that characterize dynamics and dissipation. In particular, the gradual loss of quantum coherence is observed through the use of the Wigner function, where the disappearance of the interference regions of the initial quantum states is evidenced.

Revista de la Sociedad Colombiana de Física•Jan 1, 2009•0 citations

Proposal for Direct Measurement of the Wigner Function of a Cavity Field via Raman Coupling

Zheng Shi-Biao, Xiwen Zhu

We propose a scheme for the reconstruction of a cavity field state. In the scheme the cavity field is first displaced by a microwave source, and then couples with a three-level Λ-type atom in a Raman manner. After an appropriate interaction time the measurement of the difference between the probabilities of the atom being in two ground states directly yields the Wigner function for the field state. The scheme can be easily generalized to measure the Wigner function of an entangled state of two spatially separated single-mode cavities.

Chinese Physics Letters•Dec 1, 2000•1 citation
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.
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.
ABSTRACT: The processes of quantum decoherence in QED cavities have been extensively studied in the last decade, both experimentally by Haroche, Raimond et. al., as theoretically by Nemes, Davidovich et. to the. We present here the dynamics of the Wigner function for a system consisting of a two-level atom and a cavity in a dissipative environment, using a numerical integration scheme that allows us to consider initial Squeezed and Schrodinger's Cat States. The interaction between the atom and the single-mode field is considered by a dispersive model, that is, the interaction in the Hamiltonian of Jaynes-Cummings appears as a small disturbance. The interest is focused both on the quantum characteristics of the dispersive approach (preparation of mesoscopic states) and on the aspects that characterize dynamics and dissipation. In particular, the gradual loss of quantum coherence is observed through the use of the Wigner function, where the disappearance of the interference regions of the initial quantum states is evidenced.
We propose a scheme for the reconstruction of a cavity field state. In the scheme the cavity field is first displaced by a microwave source, and then couples with a three-level Λ-type atom in a Raman manner. After an appropriate interaction time the measurement of the difference between the probabilities of the atom being in two ground states directly yields the Wigner function for the field state. The scheme can be easily generalized to measure the Wigner function of an entangled state of two spatially separated single-mode cavities.