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EPJ Quantum Technology
Figure 2 | EPJ Quantum Technology

Figure 2

From: Demonstration of 75 km-fiber quantum clock synchronization in quantum entanglement distribution network

Figure 2

Illustration of the 75 km one-user round-trip QCS experiment. DM: dichroic mirror, HWP: half-wave plate, FPS: fiber polarizing beam splitter, FPC: fiber polarization controller, EPC: electrically driven fiber polarization controller, DCM: dispersion compensation module, DWDM: dense wavelength division multiplexer, SNSPD: superconducting nanowire single-photon detector, RAC: rubidium atomic clock

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