Photon statistics in the cooperative spontaneous emission

The second-order photon correlation function g((2))(tau) of photons emitted by a continuously pumped ensemble of N two-level systems coupled to a single-mode optical cavity well below the lasing threshold is investigated theoretically. A giant photon bunching is found for N < 10 emitters as the m...

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Bibliographic Details
Published in:Optics express 2009-03, Vol.17 (7), p.5774-5782
Main Authors: Temnov, Vasily V, Woggon, Ulrike
Format: Article
Language:English
Subjects:
Computer Simulation
Light
Models, Statistical
Photons
Quantum Theory
Scattering, Radiation
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Summary:The second-order photon correlation function g((2))(tau) of photons emitted by a continuously pumped ensemble of N two-level systems coupled to a single-mode optical cavity well below the lasing threshold is investigated theoretically. A giant photon bunching is found for N < 10 emitters as the microscopic counterpart of spontaneous emission noise driven quasi-periodic superradiant pulse sequences in macroscopic systems of large numbers of emitters N >> 1. The phenomenon of giant photon bunching is preserved even for N = 2 and can be explained by the cooperative evolution via dark and bright two-atom states resulting into emission of superradiant photon pairs. The sensitivity of g((2)) to microscopic dephasing processes and resonance frequency detuning opens the door for photon bunching spectroscopy.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.17.005774