Hybrid Long-Distance Entanglement Distribution Protocol

Phys Rev Lett. 2010 Oct 15;105(16):160501. doi: 10.1103/PhysRevLett.105.160501. Epub 2010 Oct 11.

Abstract

We propose a hybrid (continuous-discrete variable) quantum repeater protocol for long-distance entanglement distribution. Starting from states created by single-photon detection, we show how entangled coherent state superpositions can be generated by means of homodyne detection. We show that near-deterministic entanglement swapping with such states is possible using only linear optics and homodyne detectors, and we evaluate the performance of our protocol combining these elements.