Quantum cryptography on a multi-drop optical network

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United States of America Patent

APP PUB NO 20070133798A1
SERIAL NO

11302331

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Abstract

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A system includes an optical network unit and a head-end or central office connected to a multi-drop optical network. The optical network unit transmits dim optical pulses via the multi-drop optical network using quantum cryptographic mechanisms to distribute encryption key symbols, where the dim optical pulses include one of single-photon optical pulses or weak attenuated optical pulses. The head-end or central office detects the dim optical pulses from the optical network unit, derives the encryption key symbols from the detected dim optical pulses, and encrypts data transmitted to the optical network unit using the encryption key symbols.

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Patent Owner(s)

Patent OwnerAddress
RAYTHEON BBN TECHNOLOGIES CORP10 MOULTON ST CAMBRIDGE MA 02138

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Elliott, Brig Barnum Arlington, MA 99 3328

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