QKD cascaded network with loop-back capability
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United States of America Patent
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Aug 31, 2010
Grant Date -
Nov 27, 2008
app pub date -
Jun 30, 2005
filing date -
Jul 2, 2004
priority date (Note) -
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Abstract
A quantum key distribution (QKD) cascaded network with loop-back capability is disclosed. The QKD system network includes a plurality of cascaded QKD relays each having two QKD stations Alice and Bob. Each QKD relay also includes an optical switch optically coupled to each QKD station in the relay, as well as to input ports of the relay. In a first position, the optical switch allows for communication between adjacent relays and in a second position allows for pass-through communication between the QKD relays that are adjacent the relay whose switch is in the first position.
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