Open system entanglement and the laser quantum state

H. J. Carmichael; Changsuk Noh

doi:10.1016/j.physe.2009.06.019

Open system entanglement and the laser quantum state

H. J. Carmichael
, Changsuk Noh

The University of Auckland

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The common assertion that lasers produce light in a coherent state and recent criticism of it are discussed. Laser theories in coherent- and Fock-state bases are reviewed, and physical interpretations of each sought by considering how entanglement with the environment is resolved to reach a reduced description. Our recently proposed criterion leading to the unique assignment of coherent states [C. Noh, H.J. Carmichael, Phys. Rev. Lett. 100 (2008) 120405-1] is developed against this background.

Original language	English
Pages (from-to)	399-406
Number of pages	8
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	42
Issue number	3
DOIs	https://doi.org/10.1016/j.physe.2009.06.019
State	Published - Jan 2010

Keywords

Coherent states
Entanglement
Laser theory
Open quantum systems

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10.1016/j.physe.2009.06.019

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abstract = "The common assertion that lasers produce light in a coherent state and recent criticism of it are discussed. Laser theories in coherent- and Fock-state bases are reviewed, and physical interpretations of each sought by considering how entanglement with the environment is resolved to reach a reduced description. Our recently proposed criterion leading to the unique assignment of coherent states [C. Noh, H.J. Carmichael, Phys. Rev. Lett. 100 (2008) 120405-1] is developed against this background.",

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AB - The common assertion that lasers produce light in a coherent state and recent criticism of it are discussed. Laser theories in coherent- and Fock-state bases are reviewed, and physical interpretations of each sought by considering how entanglement with the environment is resolved to reach a reduced description. Our recently proposed criterion leading to the unique assignment of coherent states [C. Noh, H.J. Carmichael, Phys. Rev. Lett. 100 (2008) 120405-1] is developed against this background.

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KW - Entanglement

KW - Laser theory

KW - Open quantum systems

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Open system entanglement and the laser quantum state

Abstract

Keywords

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