Wideband deep penetration of photon-number fluctuations into the quantum regime in series-coupled light-emitting diodes.
Experimental results on the squeezing of photon-number fluctuations of series-coupled LED's driven by a constant-voltage source are presented that illustrate the advantage of series-coupled LED's, namely, a greater squeezing capability than that of a single LED driven through an equivalent series resistor. We discuss the microscopic origin of the deep squeezing on the basis of quantum-mechanical Langevin equations.
Sumitomo
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Department of Physical Electronics, Hiroshima University, Kagamiyama 1-chome, Higashihiroshima 739-8527, Japan.
Kadoya
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Yamanishi
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