Quantum reservoir computing implementation on coherently coupled quantum oscillators

Abstract Quantum reservoir computing is a promising approach for quantum neural networks, capable of solving hard learning tasks on both classical and quantum input data. However, current approaches with qubits suffer from limited connectivity. We propose an implementation for quantum reservoir that...

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Main Authors: Julien Dudas, Baptiste Carles, Erwan Plouet, Frank Alice Mizrahi, Julie Grollier, Danijela Marković
Format: Article
Language:English
Published: Nature Portfolio 2023-07-01
Series:npj Quantum Information
Online Access:https://doi.org/10.1038/s41534-023-00734-4
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author Julien Dudas
Baptiste Carles
Erwan Plouet
Frank Alice Mizrahi
Julie Grollier
Danijela Marković
author_facet Julien Dudas
Baptiste Carles
Erwan Plouet
Frank Alice Mizrahi
Julie Grollier
Danijela Marković
author_sort Julien Dudas
collection DOAJ
description Abstract Quantum reservoir computing is a promising approach for quantum neural networks, capable of solving hard learning tasks on both classical and quantum input data. However, current approaches with qubits suffer from limited connectivity. We propose an implementation for quantum reservoir that obtains a large number of densely connected neurons by using parametrically coupled quantum oscillators instead of physically coupled qubits. We analyze a specific hardware implementation based on superconducting circuits: with just two coupled quantum oscillators, we create a quantum reservoir comprising up to 81 neurons. We obtain state-of-the-art accuracy of 99% on benchmark tasks that otherwise require at least 24 classical oscillators to be solved. Our results give the coupling and dissipation requirements in the system and show how they affect the performance of the quantum reservoir. Beyond quantum reservoir computing, the use of parametrically coupled bosonic modes holds promise for realizing large quantum neural network architectures, with billions of neurons implemented with only 10 coupled quantum oscillators.
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spelling doaj.art-628bf3f49ad84fc5a3e00240c8e2a3252023-07-09T11:20:29ZengNature Portfolionpj Quantum Information2056-63872023-07-01911710.1038/s41534-023-00734-4Quantum reservoir computing implementation on coherently coupled quantum oscillatorsJulien Dudas0Baptiste Carles1Erwan Plouet2Frank Alice Mizrahi3Julie Grollier4Danijela Marković5Unité Mixte de Physique CNRS, Thales, Université Paris-SaclayUnité Mixte de Physique CNRS, Thales, Université Paris-SaclayUnité Mixte de Physique CNRS, Thales, Université Paris-SaclayUnité Mixte de Physique CNRS, Thales, Université Paris-SaclayUnité Mixte de Physique CNRS, Thales, Université Paris-SaclayUnité Mixte de Physique CNRS, Thales, Université Paris-SaclayAbstract Quantum reservoir computing is a promising approach for quantum neural networks, capable of solving hard learning tasks on both classical and quantum input data. However, current approaches with qubits suffer from limited connectivity. We propose an implementation for quantum reservoir that obtains a large number of densely connected neurons by using parametrically coupled quantum oscillators instead of physically coupled qubits. We analyze a specific hardware implementation based on superconducting circuits: with just two coupled quantum oscillators, we create a quantum reservoir comprising up to 81 neurons. We obtain state-of-the-art accuracy of 99% on benchmark tasks that otherwise require at least 24 classical oscillators to be solved. Our results give the coupling and dissipation requirements in the system and show how they affect the performance of the quantum reservoir. Beyond quantum reservoir computing, the use of parametrically coupled bosonic modes holds promise for realizing large quantum neural network architectures, with billions of neurons implemented with only 10 coupled quantum oscillators.https://doi.org/10.1038/s41534-023-00734-4
spellingShingle Julien Dudas
Baptiste Carles
Erwan Plouet
Frank Alice Mizrahi
Julie Grollier
Danijela Marković
Quantum reservoir computing implementation on coherently coupled quantum oscillators
npj Quantum Information
title Quantum reservoir computing implementation on coherently coupled quantum oscillators
title_full Quantum reservoir computing implementation on coherently coupled quantum oscillators
title_fullStr Quantum reservoir computing implementation on coherently coupled quantum oscillators
title_full_unstemmed Quantum reservoir computing implementation on coherently coupled quantum oscillators
title_short Quantum reservoir computing implementation on coherently coupled quantum oscillators
title_sort quantum reservoir computing implementation on coherently coupled quantum oscillators
url https://doi.org/10.1038/s41534-023-00734-4
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