Abstract
The quantum-chaotic key distribution (QCKD) in optical networks was introduced in a recent paper. In that work, several differences between QKD and QCKD were pointed out. In this direction, the present work shows that, for a eavesdropper that uses a quantum homodyne attack, the mean photon number used by Alice in the QCKD protocol can be much larger than 0.1 without compromising its security.
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