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Title
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Temporal coherence of a photon condensate : a quantum trajectory description
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Author
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Abstract
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| In order to study the temporal coherence of a single-mode dye-cavity photon condensate, a model is developed for the dynamics which treats the condensate mode on a quantum-mechanical level. The effects of driving-dissipation and Kerr interactions on the number fluctuations are studied analytically and numerically, including the finding of a long-tau antibunching effect. Depending on the interaction strength, we quantitatively observe an exponential Schawlow-Townes-like decay or Gaussian Henry-like decay of phase correlations. The adequacy of a heuristic phasor model originating from laser physics in describing the number and phase dynamics is validated within the experimentally relevant parameter regime. The ratio of the first- and second-order coherence times is shown to be inversely proportional to the number fluctuations, with a prefactor that varies smoothly throughout the crossover between canonical and grand-canonical statistics. |
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Language
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English
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Source (journal)
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PHYSICAL REVIEW A
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Publication
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2019
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DOI
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10.1103/PHYSREVA.100.013804
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Volume/pages
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100
:1
(2019)
, 12 p.
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Article Reference
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013804
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ISI
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000473534300007
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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