We present an efficient random number generator based on the randomness present in photon emission and detection. The interval between successive photons from a light source with Poissonian statistics is separated into individual time bins, which are then used to create several random bits per detection event. Using a single-photon counter and FPGA-based data processing allows for a cost-efficient and convenient implementation that outputs data at rates of roughly 40 Mbit s−1.
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Wayne et al. (2009) studied this question.
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