High-Rate, High-Fidelity Entanglement of Qubits Across an Elementary Quantum Network

Stephenson, L. J.; Nadlinger, D. P.; Nichol, B. C.; An, S.; Drmota, P.; Ballance, T. G.; Thirumalai, K.; Goodwin, J. F.; Lucas, D. M.; Ballance, C. J.

doi:10.1103/physrevlett.124.110501

High-Rate, High-Fidelity Entanglement of Qubits Across an Elementary Quantum Network

We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link with fidelity and rate approaching those of local operations. Two ^{88}Sr^{+} qubits are entangled via the polarization degree of freedom of two spontaneously emitted 422 nm photons which are coupled by high…