Single-channel transmission of qubits and classical bits over an optical telecommunications network
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United States of America Patent
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Issued Date -
Jun 12, 2008
app pub date -
Dec 4, 2007
filing date -
Dec 6, 2006
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Abandoned
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Abstract
Systems and methods that allow for transmitting qubits and classical signal over the same channel of an optical telecommunications network that includes an optical fiber. The method includes sending the qubits of wavelength .lamda..sub.S over a quantum optical path that includes the optical fiber during a time interval .DELTA.T.sub.0 when there are no classical optical signals of wavelength .lamda..sub.S traveling over the optical fiber. The method also includes sending the classical signals over a classical optical path that includes the optical fiber, wherein the classical signals are sent outside of the time interval .DELTA.T.sub.0 to avoid interfering with the qubit transmission. Systems and methods for using the present invention to form quantum key banks for encrypting classical signals sent over the optical telecommunications network are also disclosed.
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