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Optica Publishing Group
  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1998),
  • paper QTuA5

Photon-number squeezing in semiconductor light-emitting diodes

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Abstract

The performance of light communication systems and the sensitivity of various measurements have been already limited by the standard quantum limit (SQL) determined by Heisenberg’s uncertainty principle. Hence, the generation of nonclassical light, such as photon-number squeezed states and quadrature- phase squeezed states is required to circumvent such difficulties associated with the SQL. Among a variety of schemes for nonclassical light generation, sub-Poissonian photon-state generation by semiconductor light emitters has been attracting much attention, because of the simplicity of experimental arrangement, low energy consumption, and the feasibility of a large degree of noise-suppression of photon numbers. Specifically, the generation of sub- Poissonian photon fluxes with spontaneous emission-mode operation is of crucial importance because the squeezing of quantum fluctuations of photon numbers becomes significant in very weak photon fluxes such as 10 photons in each optical pulse. In this presentation, we shall focus on our own experimental results of the generation of sub-Poissonian photon states with semiconductor light-emitting diodes (LEDs) at room temperature.

© 1998 Optical Society of America

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