Experimental study demonstrates improved rate-loss scaling in polarization entanglement distribution, indicating viable paths for near-term quantum networks.
Key Points
To overcome the fundamental rate-loss scaling limit in optical polarization entanglement distribution across lossy channels using a streamlined quantum protocol.
Integrated polarization-photon-number hybrid entanglement with a single-click entanglement swapping protocol.
Experimentally distributed polarization entangled photon pairs across a lossy channel to evaluate rate-loss scaling and state quality.
Demonstrated a square-root improvement in rate-loss scaling compared to conventional transmission approaches, achieving performance equivalent to a 1-hop quantum repeater node.
Achieved a state fidelity of 0.843 for the distributed polarization-entangled photon pairs.