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Acquisition technology for optical ground stations in satellite-ground quantum experiments.

Dong He, Qiang Wang, Bo Qi

|February 23, 2018

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This study presents a new satellite acquisition method for optical ground stations, achieving 100% success and fast acquisition times for quantum experiments.

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Area of Science:

Quantum communication
Optical satellite links

Background:

Establishing stable optical links between ground stations and quantum satellites is crucial for advanced quantum experiments.
The Micius satellite requires precise pointing and rapid acquisition for successful quantum communication.
Existing acquisition methods may not meet the stringent demands of quantum experiments.

Purpose of the Study:

To propose and analyze a novel acquisition method for the Micius satellite.
To design an acquisition strategy tailored for quantum experiments.
To enhance the absolute pointing precision of the optical ground station (OGS).

Main Methods:

Development of a specialized acquisition strategy for the OGS.
Implementation of a precise pointing method to target the quantum satellite.
Analysis of the technological specifications of the OGS system for acquisition.

Main Results:

Achieved a correction accuracy better than 5 μrad.
Reduced acquisition time to less than 5 seconds.
Demonstrated a 100% acquisition probability in all trials so far.

Conclusions:

The proposed acquisition method is highly effective for establishing optical links with quantum satellites.
The developed strategy meets the demanding requirements of quantum experiments, ensuring high precision and reliability.
This advancement facilitates future quantum communication and experimentation via satellite links.