A heralded quantum gate between remote quantum memories

P. Maunz; S. Olmschenk; D. Hayes; D. N. Matsukevich; L. -M. Duan; C. Monroe

doi:10.1103/PhysRevLett.102.250502

A heralded quantum gate between remote quantum memories

Quantum Physics 2015-05-13 v1

Authors: P. Maunz , S. Olmschenk , D. Hayes , D. N. Matsukevich , L. -M. Duan , C. Monroe

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Abstract

We demonstrate a probabilistic entangling quantum gate between two distant trapped ytterbium ions. The gate is implemented between the hyperfine "clock" state atomic qubits and mediated by the interference of two emitted photons carrying frequency encoded qubits. Heralded by the coincidence detection of these two photons, the gate has an average fidelity of 90+-2%. This entangling gate together with single qubit operations is sufficient to generate large entangled cluster states for scalable quantum computing.

Keywords

quantum gates and qubits quantum entanglement quantum memory

Cite

@article{arxiv.0902.2136,
  title  = {A heralded quantum gate between remote quantum memories},
  author = {P. Maunz and S. Olmschenk and D. Hayes and D. N. Matsukevich and L. -M. Duan and C. Monroe},
  journal= {arXiv preprint arXiv:0902.2136},
  year   = {2015}
}

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