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The asymptotic capacity at low input powers of an average-power limited or an average- and peak-power limited discrete-time Poisson channel is considered. For a Poisson channel whose dark current is zero or decays to zero linearly with its average input power ε, capacity scales like ε log 1/ε for small ε. For a Poisson channel whose dark current is a nonzero constant, capacity scales, to within a...
We demonstrate for the first time far-field ghost imaging with phase-sensitive classical light whose anti-phase correlation between the signal and reference beams is imposed by two spatial light modulators.
We demonstrate resolution enhancement beyond the Rayleigh diffraction limit using an N-photon detection strategy that is implemented with a single-photon imager. Experimental results are in good agreement with theory proposed by Giovannetti et al. [1].
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