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We would also need an optical atomic clock at each receiver in order to have enough time resolution to correlate the signals correctly. A few optical clocks exi
by fanf2 2y ago
We would also need an optical atomic clock at each receiver in order to have enough time resolution to correlate the signals correctly. A few optical clocks exist but they are still highly experimental.
- kragen 2y agomaybe you could just send a reference light beam between the receivers over an optical fiber to provide a phase reference?
- Vecr 2y agoThe dream would be a planet-sized optical telescope, but even a European country sized 'scope would have trouble with your idea.
- kragen 2y agopeople already send light beams over ocean-length optical fibers (that's how we're talking). this is achieved by the use of erbium-doped fiber amplifiers, which preserve wavelength and phase information, but even without amplification you can reach 500 km: https://phys.org/news/2023-06-scientists-km-quantum-key.html https://phys.org/news/2023-06-scientists-km-quantum-key.html and of course we're only talking about these rube goldberg setups because we're perversely trying to build a telescope with a giant rock in the middle of it. if we build the telescope in solar orbit, we can just shine a light through space for the phase reference