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Phys. Rev. A 68, 023802 (2003) [4 pages]

Direct measurement of quasiprobability distributions in cavity QED

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Raúl Juárez-Amaro1,2 and Héctor Moya-Cessa1
1Instituto Nacional de Astrofísica, Optica y Electrónica, Apartado Postal 51 y 216, 72000 Puebla, Puebla, Mexico
2Universidad Tecnológica de la Mixteca, Apartado Postal 71, 69000 Huajuapan de León, Oaxaca, Mexico

Received 13 November 2002; published 6 August 2003

We show that the set of s-parametrized quasiprobability distribution functions corresponding to an electromagnetic field in a cavity subject to dissipation can be directly measured. Such distributions contain whole information of the quantum state, therefore making it possible to recover information after losses have occurred.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.023802
DOI:
10.1103/PhysRevA.68.023802
PACS:
42.50.Pq, 42.50.Dv, 03.65.Ta