QUANTUM KEY DISTRIBUTION WITH FOUR ALPHABETIC LETTERS NON-GAUSSIAN MODULATION USING SQUEEZING STATES
2010 ◽
Vol 08
(05)
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pp. 779-786
Keyword(s):
We present a new non-Gaussian quantum key distribution (QKD) protocol using squeezed states. Compared with a binary modulation, the efficiency can be improved when a four alphabetic letters modulation is chosen. We then analyze the security of the protocol under a collective entangling cloner attack, which is a powerful attack strategy in continuous variable QKD. We also show how the modulation coefficient affects the key rate, then the key rate can be maximized by choosing an optimal coefficient.
Keyword(s):
2015 ◽
Vol 15
(2)
◽
pp. 893-904
◽
Keyword(s):