LOW NOISE PHOTON NUMBER MANIPULATION USING SEMICONDUCTOR LIGHT EMITTERS AND RECEIVERS

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Abstract
The photon number (intensity) of a light beam can be read out and amplified essentially without adding any noise. In this article we will describe recent proof-of-principle experiments using simple optoelectronic circuits. We also discuss the significance of these results with respects to applications in communication and quantum optics. The relation to quantum non-demolition measurement (QND) strategies is also discussed.

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