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

M. Brune; J. Bernu; C. Guerlin; S. Deleglise; C. Sayrin; S. Gleyzes; S. Kuhr; I. Dotsenko; J. M. Raimond; S. Haroche

doi:10.1103/PhysRevLett.101.240402

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

M. Brune, J. Bernu, C. Guerlin, S. Deleglise, C. Sayrin, S. Gleyzes, S. Kuhr, I. Dotsenko, J. M. Raimond, S. Haroche

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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

Original language	English
Number of pages	4
Journal	Physical Review Letters
Volume	101
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.101.240402
Publication status	Published - 12 Dec 2008

Keywords

quantum process tomography
process tomography
field damping
fock state lifetimes
measurement

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10.1103/PhysRevLett.101.240402

2441777Submitted manuscript, 1.97 MB

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

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 ",

keywords = "quantum process tomography, process tomography , field damping , fock state lifetimes , measurement",

author = "M. Brune and J. Bernu and C. Guerlin and S. Deleglise and C. Sayrin and S. Gleyzes and S. Kuhr and I. Dotsenko and Raimond, {J. M.} and S. Haroche",

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doi = "10.1103/PhysRevLett.101.240402",

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T1 - Process tomography of field damping and measurement of fock state lifetimes by quantum nondemolition photon counting in a cavity

AU - Brune, M.

AU - Bernu, J.

AU - Guerlin, C.

AU - Deleglise, S.

AU - Sayrin, C.

AU - Gleyzes, S.

AU - Kuhr, S.

AU - Dotsenko, I.

AU - Raimond, J. M.

AU - Haroche, S.

PY - 2008/12/12

Y1 - 2008/12/12

N2 - 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

AB - 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

KW - quantum process tomography

KW - process tomography

KW - field damping

KW - fock state lifetimes

KW - measurement

U2 - 10.1103/PhysRevLett.101.240402

DO - 10.1103/PhysRevLett.101.240402

M3 - Article

SN - 0031-9007

VL - 101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

ER -

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

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Keywords

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