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Process tomography of field damping and measurement of fock state lifetimes by quantum nondemolition photon counting in a cavity

Brune, M. and Bernu, J. and Guerlin, C. and Deleglise, S. and Sayrin, C. and Gleyzes, S. and Kuhr, S. and Dotsenko, I. and Raimond, J. M. and Haroche, S. (2008) Process tomography of field damping and measurement of fock state lifetimes by quantum nondemolition photon counting in a cavity. Physical Review Letters, 101 (24). ISSN 0031-9007

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Abstract

The relaxation of a quantum field stored in a high-Q superconducting cavity is monitored by nonresonant Rydberg atoms. The field, subjected to repetitive quantum nondemolition photon counting, undergoes jumps between photon number states. We select ensembles of field realizations evolving from a given Fock state and reconstruct the subsequent evolution of their photon number distributions. We realize in this way a tomography of the photon number relaxation process yielding all the jump rates between Fock states. The damping rates of the n photon states (0

Item type: Article
ID code: 30286
Keywords: quantum process tomography, process tomography , field damping , fock state lifetimes , measurement, Physics, Physics and Astronomy(all)
Subjects: Science > Physics
Department: Faculty of Science > Physics
Depositing user: Pure Administrator
Date Deposited: 15 Nov 2011 16:44
Last modified: 15 Apr 2015 09:25
URI: http://strathprints.strath.ac.uk/id/eprint/30286

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