High-rate, high-fidelity entanglement of qubits across an elementary quantum network

@inproceedings{Stephenson2019HighrateHE,
  title={High-rate, high-fidelity entanglement of qubits across an elementary quantum network},
  author={L J Stephenson and D Nadlinger and B. C. Nichol and Sangkyum An and Peter Drmota and T. G. Ballance and K Thirumalai and Joseph F. Goodwin and David M. Lucas and Christopher J. Ballance},
  year={2019}
}
  • L J Stephenson, D Nadlinger, +7 authors Christopher J. Ballance
  • Published 2019
  • Physics, Mathematics
  • 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 photons which are coupled by high-numerical-aperture lenses into single-mode optical fibers and interfere on a beamsplitter. A novel geometry allows high-efficiency photon collection while maintaining unit fidelity for ion-photon entanglement. We generate… CONTINUE READING

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