QUANTUM ENCRYPTED DATA TRANSMISSION IN OPTICALLY-AMPLIFIED WDM COMMUNICATIONS
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United States of America Patent
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Issued Date -
Apr 11, 2013
app pub date -
Oct 11, 2011
filing date -
Oct 11, 2011
priority date (Note) -
Abandoned
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Abstract
A quantum cryptographic protocol is proposed, which uses two-mode coherent states and an M-ary modulation format determined in part by an expanded secret key. The encrypted signal is optically amplifiable, resulting in a polarization independent system that is compatible with the existing WDM communications infrastructure.
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