Article open access publication

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

Physical Review A, American Physical Society (APS), ISSN 2469-9926

Volume 95, 4, 2017

DOI:10.1103/physreva.95.042312, Dimensions: pub.1084786562,

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  1. (1) Harvard University, grid.38142.3c
  2. (2) University of Copenhagen, grid.5254.6, KU
  3. (3) Max-Planck Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany

Description

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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University of Copenhagen

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Times Cited: 4

Field Citation Ratio (FCR): 1.39

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