Multi-user measurement equipment unrelated QKD system and method based on GHZ entangled state
A technology for measuring equipment and entangled states, which is applied in the field of vehicle information quantum communication, can solve problems such as not considering quantum secure communication, and achieve the effects of increasing loss tolerance, mature and reliable technology, and easy implementation.
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[0052] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the examples, but the scope of protection claimed by the present invention is not limited to the following specific examples.
[0053] Such as Figure 4 As shown, a multi-user measurement equipment-independent QKD system based on GHZ entanglement state includes N senders (the first sender Send 1, the second sender Send 2...the Nth sender Send N), and N The measuring party (the first measuring party Det 1, the second measuring party Det 2...the Nth measuring party Det N) and a GHZ state entanglement source, the GHZ state entanglement source is also a sender (it can also be N+1 The sender Send N+1 indicates that in the figure it is the N+1th sender Send N+1), wherein the first sender, the second sender...the Nth sender are connected to each other through a classic channel;
[0054] Specifica...
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