Method And Apparatus For Generating Optical Pulses For Qkd
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United States of America Patent
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Issued Date -
Jun 5, 2008
app pub date -
Sep 12, 2005
filing date -
Sep 10, 2004
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Abstract
Methods and apparatus for generating coherent optical pulses (P1', P2') in a quantum key distribution (QKD) station (Alice-N) of a QKD system (10) without using an optical fiber interferometer (12) are disclosed. The method includes generating a continuous wave (CW) beam of coherent radiation (R) having a coherence length LC and modulating the CW beam within the coherence length. The invention obviates the need for an interferometer loop to form multiple optical pulses from a single optical pulse, thereby obviating the need for thermal stabilization of the interferometer loop at the QKD station Alice-N.
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