Key points are not available for this paper at this time.
High visibility (V = 0.985) single photon fringe measurements in a 10 km long, optical fibre-based, time- and polarisation-division Mach-Zehnder interferometer are reported. The ability of the system to transmit key data in a quantum cryptography scheme is assessed.
Townsend et al. (Thu,) studied this question.
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