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arXiv · 1612.06812

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

Johannes Borregaard·Anders S. Sørensen·Ignacio Cirac·Mikhail D. Lukin
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Abstract

A new approach to efficient quantum computation with probabilistic gates is proposed and analyzed in both a local and non-local setting. It combines heralded gates previously studied for atom or atom-like 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 novel path towards quantum networks with atomic nodes and photonic links.

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Johannes Borregaard, Anders S. Sørensen, Ignacio Cirac, Mikhail D. Lukin. 2016-12-20. Efficient quantum computation in a network with probabilistic gates and logical encoding. https://doi.org/10.1103/physreva.95.042312

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