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arXiv:1911.10841 (quant-ph)
[Submitted on 25 Nov 2019 (v1), last revised 13 May 2020 (this version, v2)]

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

Authors:L J Stephenson, D P Nadlinger, B C Nichol, S An, P Drmota, T G Ballance, K Thirumalai, J F Goodwin, D M Lucas, C J Ballance
View a PDF of the paper titled High-rate, high-fidelity entanglement of qubits across an elementary quantum network, by L J Stephenson and 9 other authors
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Abstract: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 remote Bell pairs with fidelity $F=0.940(5)$ at an average rate $182\,\mathrm{s}^{-1}$ (success probability $2.18\times10^{-4}$).
Comments: v2 updated to include responses to reviewers, as published in PRL
Subjects: Quantum Physics (quant-ph); Atomic Physics (physics.atom-ph)
Cite as: arXiv:1911.10841 [quant-ph]
  (or arXiv:1911.10841v2 [quant-ph] for this version)
  https://doi.org/10.48550/arXiv.1911.10841
arXiv-issued DOI via DataCite
Journal reference: Phys. Rev. Lett. 124, 110501 (2020)
Related DOI: https://doi.org/10.1103/PhysRevLett.124.110501
DOI(s) linking to related resources

Submission history

From: Laurent Stephenson [view email]
[v1] Mon, 25 Nov 2019 11:28:28 UTC (479 KB)
[v2] Wed, 13 May 2020 23:30:05 UTC (733 KB)
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