Superradiance and subradiance in an inhomogeneously broadened ensemble of two-level systems coupled to a low-Q cavity |
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Authors: | Temnov Vasily V Woggon Ulrike |
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Affiliation: | Experimentelle Physik IIb, Universit?t Dortmund, Otto-Hahn Strasse 4, D-44221 Dortmund, Germany. |
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Abstract: | The collective spontaneous emission of a fully inverted inhomogeneously broadened ensemble of N two-level systems coupled to a single-mode low-Q cavity is investigated numerically using Monte Carlo wave function technique. An intrinsically bi-exponential emission dynamics is found when the time scales of superradiance tau(sr) and inhomogeneous dephasing T2* approximately 1/Deltaomega(inh) become comparable: a fast superradiant is followed by a slow subradiant decay. Experimental configurations using ensembles of quantum dots coupled to optical microcavities are proposed as possible candidates to observe the combined superradiant and subradiant energy relaxation. |
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