Quantum communication relies on the efficient generation of entanglement between remote quantum nodes, as entanglement is required to achieve and verify secure communications1. Remote entanglement has been realized using a number of different probabilistic schemes2,3, but deterministic remote entanglement has only been demonstrated recently, using a variety of superconducting circuit approaches4–6. However, the deterministic violation of a Bell inequality7, a strong measure of quantum correlation, has not been demonstrated so far in a superconducting quantum communication architecture, in part because achieving sufficiently strong correlation requires fast and accurate control of the emission and capture of the entangling photons. Here, we present a simple and robust architecture for achieving this benchmark result in a superconducting system.
CITATION STYLE
Zhong, Y. P., Chang, H. S., Satzinger, K. J., Chou, M. H., Bienfait, A., Conner, C. R., … Cleland, A. N. (2019, August 1). Violating Bell’s inequality with remotely connected superconducting qubits. Nature Physics. Nature Publishing Group. https://doi.org/10.1038/s41567-019-0507-7
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