A quantum cryptography set-up is described. It uses polarized photons to code the key. The photons remain guided from the semiconductor laser diode until the photon counter module. The feasibility of establishing a key over more than 1 km by this method has been experimentally demonstrated.
No takes yet. Share an insight, caveat, or question.
Müller et al. (1993) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: