Abstract

Among a variety of schemes for nonclassic light generation, the generation of sub-Poissonian photon states with semiconductor lasers or light-emitting diodes (LEDs) is specifically attractive because of the simplicity of experimental arrangement, low energy consumption, and feasibility of a large degree of noise suppression of photon numbers. Specific interest lies in sub-Poissonian photon-state generation in the LED (spontaneous emission) - mode operation from the point of view of few (≤10)-photon robust communication.¹ In this talk, we present our experimental results on wideband (~60 MHz) noise suppression of output photon fluxes below the standard quantum limit (SQL) level from series-connected LEDs at room temperature. Particularly, the degree of the noise suppression in series-connected LEDs is demonstrated to be substantially larger than that in a single LED driven through an equivalent series resistor.

© 1998 Optical Society of America