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Non-unital noise in a superconducting quantum computer as a computational resource for reservoir computing

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arxiv 2409.07886 v3 pith:RK3CGVWE submitted 2024-09-12 quant-ph

Non-unital noise in a superconducting quantum computer as a computational resource for reservoir computing

classification quant-ph
keywords noisecomputingnetworkquantumreservoirappliedcomputerdissipation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We identify a noise model that ensures the functioning of an echo state network employing a gate-based quantum computer for reservoir computing applications. Energy dissipation induced by amplitude damping drastically improves the short-term memory capacity and expressivity of the network, by simultaneously providing fading memory and richer dynamics. There is an ideal dissipation rate that ensures the best operation of the echo state network around $\gamma\sim$ 0.03. Nevertheless, these beneficial effects are stable as the intensity of the applied noise increases. The improvement of the learning is confirmed by emulating a realistic noise model applied to superconducting qubits, paving the way for the application of reservoir computing methods in current non-fault-tolerant quantum computers.

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Cited by 5 Pith papers

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