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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; Bernu, Julien; Guerlin, C; Deleglise, S; Sayin, C; Gleyzes, S; Kuhr, S; Dotsenko, I; Raimond, J M; Haroche, S


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...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.101.240402


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