Efficient quantum computation in a network with probabilistic gates and logical encoding

J. Borregaard, A. S. Sørensen, J. I. Cirac, and M. D. Lukin
Phys. Rev. A 95, 042312 – Published 11 April 2017

Abstract

An approach to efficient quantum computation with probabilistic gates is proposed and analyzed in both a local and nonlocal setting. It combines heralded gates previously studied for atom or atomlike qubits with logical encoding from linear optical quantum computation in order to perform high-fidelity quantum gates across a quantum network. The error-detecting properties of the heralded operations ensure high fidelity while the encoding makes it possible to correct for failed attempts such that deterministic and high-quality gates can be achieved. Importantly, this is robust to photon loss, which is typically the main obstacle to photonic-based quantum information processing. Overall this approach opens a path toward quantum networks with atomic nodes and photonic links.

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  • Received 20 December 2016

DOI:https://doi.org/10.1103/PhysRevA.95.042312

©2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

J. Borregaard1, A. S. Sørensen2, J. I. Cirac3, and M. D. Lukin1

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
  • 2The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
  • 3Max-Planck Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany

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Issue

Vol. 95, Iss. 4 — April 2017

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