Entangled photon pair transmission rate estimation method for satellite-ground downlink
A downlink and transmission rate technology, applied in the field of entangled photon pair transmission rate estimation, can solve the problems of low transmission rate accuracy, fuzzy estimation process, and no clear description of the type and quantity of measurement bases, so as to improve estimation accuracy and ensure transmission. Fidelity effect
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[0046] Reference attached figure 1 , The specific steps of the present invention will be further described in detail.
[0047] Step 1. The atmospheric channel transmits entangled photon pairs.
[0048] The satellite sends the two photons of the polarization entangled photon pair generated by its entangled light quantum source to ground station A and ground station B respectively.
[0049] Step 2. Measure the distance between the star and the ground.
[0050] Use the Beidou system clock synchronization method or master-slave synchronization method to synchronize the clocks of the satellite and the ground station.
[0051] The steps of the Beidou system clock synchronization method are as follows:
[0052] In the first step, the Beidou satellite navigation system sends the second synchronization signal and time information to the ground station and the satellite respectively.
[0053] In the second step, the ground station and the satellite use the received second synchronization signal a...
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