Quantum key distribution device, quantum key distribution system, and quantum key distribution method
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United States of America Patent
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Nov 22, 2016
Grant Date -
Aug 20, 2015
app pub date -
Feb 13, 2015
filing date -
Feb 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
According to an embodiment, a quantum key distribution device includes a key sharing unit, a correcting unit, a compressor, and a controller. The key sharing unit is configured to generate a shared bit string by using quantum key distribution performed with another quantum key distribution device via a quantum communication channel. The correcting unit is configured to generate a corrected bit string through an error correction process with respect to the shared bit string. The compressor is configured to generate an encryption key through a key compression process with respect to the corrected bit string. The controller is configured to perform a restraining operation in which the total number of bits of encryption keys generated per unit time by the compressor is smaller than the total number of bits of the encryption keys generated per unit time by the compressor in the case of not performing the restraining operation.
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