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APPARATUS AND METHOD FOR DECOY-STATE THREE-STATE QUANTUM KEY DISTRIBUTION
APPARATUS AND METHOD FOR DECOY-STATE THREE-STATE QUANTUM KEY DISTRIBUTION
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机译：诱骗态三态量子密钥分配的装置和方法
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摘要
The invention relates to a Quantum Key Distribution system comprising a transmitter (300) and a receiver (400) for exchanging a quantum key via a quantum channel (600) through a decoy-state three state protocol wherein the transmitter comprises a transmitter processing unit (340) adapted to use random numbers from a quantum random generator to select a quantum state to encode from different states of intensity and basis,a Pulsed light source (310) adapted to generate an optical pulse, a time-bin interferometer (320) through which the generated optical pulse passes and which transforms generated optical pulse into two coherent pulses separated by the time bin duration,a single intensity modulator (360) adapted to change the intensity of the two pulses individually according to the choice made by the transmitter processing unit (340), and a variable optical attenuator (370) adapted to reduce the overall signal intensity to the optimum photon number per pulse.
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