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arXiv · 2102.01374

Efficient Concatenated Bosonic Code for Additive Gaussian Noise

Kosuke Fukui·Takaya Matsuura·Nicolas C. Menicucci
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Abstract

Bosonic codes offer noise resilience for quantum information processing. Good performance often comes at a price of complex decoding schemes, limiting their practicality. Here, we propose using a Gottesman-Kitaev-Preskill (GKP) code to detect and discard error-prone qubits, concatenated with a quantum parity code to handle the residual errors. Our method employs a simple, linear-time decoder that nevertheless offers significant performance improvements over the standard decoder. Our work may have applications in a wide range of quantum computation and communication scenarios.

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Kosuke Fukui, Takaya Matsuura, Nicolas C. Menicucci. 2021-02-02. Efficient Concatenated Bosonic Code for Additive Gaussian Noise. https://doi.org/10.1103/physrevlett.131.170603

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