Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

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

[img]
Preview
PDF
2441777.pdf - Preprint

Download (2MB) | Preview

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