We present a scheme to demonstrate loophole-free Bell inequality violation where the entanglement between photon pairs is transferred to solid state (spin) qubits mediated by cavity QED interactions. As this transfer can be achieved in a heralded way, our scheme is basically insensitive to losses on the channel. This makes it appealing for the implementation of quantum information protocols based on nonlocality, such as device-independent quantum key distribution. We consider potential experimental realisations of our scheme using single atom, colour centre and quantum dot cavity systems.
@article{arxiv.1303.6522,
title = {Proposal for a loophole-free Bell test based on spin-photon interactions in cavities},
author = {Nicolas Brunner and Andrew B. Young and Chengyong Hu and John G. Rarity},
journal= {arXiv preprint arXiv:1303.6522},
year = {2013}
}