Sn. Molotkov, QUANTUM CRYPTOGRAPHY USING PHOTON FREQUENCY STATES (EXAMPLE OF A POSSIBLE REALIZATION), Journal of experimental and theoretical physics (Print), 87(2), 1998, pp. 288-293
A quantum cryptosystem is proposed using single-photon states with dif
ferent frequency spectra as information carriers. A possible experimen
tal implementation of the cryptosystem is discussed. (C) 1998 American
Institute of Physics. [S1063-7761(98)01208-6].