High Order Coherence Functions and Spectral Distributions as Given by the Scully-Lamb Quantum Theory of the Laser

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https://www.frontiersin.org/articles/10.3389/fphy.2021.657333

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https://doi.org/10.3389/fphy.2021.657333
 http://hdl.handle.net/11603/32782

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UMBC Faculty Collection
UMBC Physics Department

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2021-04-21

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journal articles
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Citation of Original Publication

Peng, Tao, Xingchen Zhao, Yanhua Shih, and Marlan O. Scully. “High Order Coherence Functions and Spectral Distributions as Given by the Scully-Lamb Quantum Theory of the Laser.” Frontiers in Physics 9 (April 21, 2021). https://doi.org/10.3389/fphy.2021.657333.

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Creative Commons Attribution 4.0 International (CC BY 4.0)

Subjects

density matrix
Heterodyne detection
High order coherence
quantum theory of the laser
spectral line distribution

Abstract

We propose and demonstrate a method for measuring the time evolution of the off-diagonal elements ρ(n,n+k(t)) of the reduced density matrix obtained from the quantum theory of the laser. The decay rates of the off-diagonal matrix element ρ(n,n+k(t)) (k=2,3) are measured for the first time and compared with that of ρ(n,n+1(t)), which corresponds to the linewidth of the laser. The experimental results agree with the Scully-Lamb quantum theory of the laser.