• Open Access

Quantum Networks with Chiral-Light–Matter Interaction in Waveguides

Sahand Mahmoodian, Peter Lodahl, and Anders S. Sørensen
Phys. Rev. Lett. 117, 240501 – Published 5 December 2016
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Abstract

We propose a scalable architecture for a quantum network based on a simple on-chip photonic circuit that performs loss-tolerant two-qubit measurements. The circuit consists of two quantum emitters positioned in the arms of an on-chip Mach-Zehnder interferometer composed of waveguides with chiral-light–matter interfaces. The efficient chiral-light–matter interaction allows the emitters to perform high-fidelity intranode two-qubit parity measurements within a single chip and to emit photons to generate internode entanglement, without any need for reconfiguration. We show that, by connecting multiple circuits of this kind into a quantum network, it is possible to perform universal quantum computation with heralded two-qubit gate fidelities F0.998 achievable in state-of-the-art quantum dot systems.

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  • Received 29 February 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.240501

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Sahand Mahmoodian, Peter Lodahl, and Anders S. Sørensen

  • Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

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Issue

Vol. 117, Iss. 24 — 9 December 2016

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