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Demonstration of a low-noise near-infrared photon counter with multiphoton discrimination
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23.The assumptions made for this estimate are those of Ref. 4 with detector efficiency a conservative dark-count probability bit-arrival interval for the TES devices and for conventional devices, a constant 5 dB of optical losses in the receiver, and fiber losses of 0.2 dB/km at a transmission wavelength of 1550 nm. Note that is significantly lower than is typically used in existing quantum cryptography implementations due to our requirement that the system be unconditionally secure against even the strongest individual-bit eavesdropping attack.
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