A quantum-assisted master clock in the sky: global synchronization from satellites at sub-nanosecond precision
| Autor: | Ducoing, Sage, Agullo, Ivan, Troupe, James E., Haldar, Stav |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | This article develops a protocol to synchronize clocks on board a network of satellites equipped with quantum resources. We show that, in such a constellation, satellites reinforce each other's sync capabilities, forming a common clock that is more stable and precise than its constituents. We envision the resulting network as a master clock able to distribute time across the globe, providing the basis for a future quantum global navigation satellite system or a space-based quantum network. As an example of its capabilities, we show that a constellation of 50 satellites equipped with modest quantum resources, and distributed amongst 5 orbits at an altitude of 500 km, allows the synchronization of clocks spread across the globe at sub-nanosecond precision. Comment: 16 pages, 11 figures and 3 tables. Comments are welcome |
| Databáze: | arXiv |
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