Optical Hybrid Quantum Information: Example of a Continuous-Variable Trustworthy Witness for Single-Photon Entanglement
Olivier Morin, Virginia D’Auria, Claude Fabre, Julien Laurat, Jean-Daniel Bancal, Melvyn Ho, Pavel Sekatski, Nicolas Gisin, Nicolas Sangouard · 2013
We demonstrate a novel trustworthy witness for single-photon entanglement based only on local homodyne measurements. This operational test is well suited for quantum networks, and highlights the potential of the optical hybrid approach.