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Article

Faint laser pulses versus a single-photon source in free space quantum cryptography

Laser Physics Letters. 2016. Vol. 13. P. 1-4.
Potapova T. A., Molotkov S.

In this letter we present estimates for the distance of secret key transmission through free space for three different protocols of quantum key distribution: for BB84 and phase timecoding protocols in the case of a strictly single-photon source, and for the relativistic quantum key distribution protocol in the case of faint laser pulses.