Quantum digital signature system resistant to polarization disturbance
A quantum digital signature and polarization technology, which is applied in digital transmission system, transmission system, photonic quantum communication, etc., can solve the problems of increasing system complexity and instability, fiber channel birefringence, and system impact can not be ignored, so as to achieve convenient Effects of high-volume production, improved stability, and reduced cost and complexity
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[0019] The present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0020] like figure 1 As shown, a quantum digital signature system anti-polarization perturbation, including a message sender Alice100 and two message receivers Bob200 and receiver Charlie300, the sender Alice100 sends a message combined with a digital signature to the receiver Bob200 and The receiver Charlie300, the receiver Bob200 acts as the authenticator of the message, and forwards the information sent by the sender Alice100 to the receiver Charlie300,
[0021] The receiver Bob200 includes a laser Laser210, an optical intensity modulator IM220, an unequal arm MZ interferometer 230, an adjustable attenuator VOA240 and a depolarizer Depol250, and the laser Laser210 is connected to the optical intensity modulator IM220 in turn , unequal arms MZ interferometer 230, adjustable attenuator VOA240 and depolarizer De...
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