System and method for data transmission over arbitrary media using physical encryption
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United States of America Patent
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Nov 20, 2012
Grant Date -
Apr 22, 2010
app pub date -
Jun 10, 2009
filing date -
Nov 5, 2004
priority date (Note) -
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Abstract
Apparatus and method for a secure communication network using AlphaEta quantum encryption is provided. A polarization insensitive optical receiver based on a 90 degrees hybrid coupler is used for the detection and digitization of optically encrypted signals. Once digitized, such signals can be decrypted, stored, or re-transmitted over arbitrary media such as using RF wireless means. Alternatively, the signal can be generated directly for transmission over RF wireless nodes. The system may include nodes for retransmitting the signal without decrypting it, allowing for secure communication among specific users.
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