The Heisenberg limit for laser coherence

Howard M. Wiseman; S. Nariman Saadatmand; Travis J. Baker; Dominic W. Berry; Dominic W. Berry

doi:10.1364/CQO.2019.M3A.1

Rochester Conference on Coherence and Quantum Optics (CQO-11)
OSA Technical Digest (Optica Publishing Group, 2019),
paper M3A.1
•https://doi.org/10.1364/CQO.2019.M3A.1

The Heisenberg limit for laser coherence

Howard M. Wiseman, S. Nariman Saadatmand, Travis J. Baker, and Dominic W. Berry

Conference on Coherence and Quantum Optics 2019

Rochester, New York United States
4–8 August 2019
ISBN: 978-1-943580-69-9

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H. M. Wiseman, S. N. Saadatmand, T. J. Baker, and D. W. Berry, "The Heisenberg limit for laser coherence," in Rochester Conference on Coherence and Quantum Optics (CQO-11), OSA Technical Digest (Optica Publishing Group, 2019), paper M3A.1.

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Abstract

Let $ℭ$ be the number of photons in a coherence time. The standard (Schawlow-Townes) result is $ℭ = O (µ^{2})$ , with µ the laser cavity photon number. Here we establish the Heisenberg limit: $ℭ = O (µ^{4})$ .

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