A high-fidelity quantum matter-link between ion-trap microchip modules.

Autor: Akhtar M; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK.; Universal Quantum Ltd, Brighton, BN1 6SB, UK., Bonus F; Universal Quantum Ltd, Brighton, BN1 6SB, UK.; Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK., Lebrun-Gallagher FR; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK.; Universal Quantum Ltd, Brighton, BN1 6SB, UK., Johnson NI; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK., Siegele-Brown M; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK., Hong S; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK., Hile SJ; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK., Kulmiya SA; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK.; Quantum Engineering Centre for Doctoral Training, University of Bristol, Bristol, BS8 1TH, UK., Weidt S; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK.; Universal Quantum Ltd, Brighton, BN1 6SB, UK., Hensinger WK; Sussex Centre for Quantum Technologies, University of Sussex, Brighton, BN1 9QH, UK. w.k.hensinger@sussex.ac.uk.; Universal Quantum Ltd, Brighton, BN1 6SB, UK. w.k.hensinger@sussex.ac.uk.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Feb 08; Vol. 14 (1), pp. 531. Date of Electronic Publication: 2023 Feb 08.
DOI: 10.1038/s41467-022-35285-3
Abstrakt: System scalability is fundamental for large-scale quantum computers (QCs) and is being pursued over a variety of hardware platforms. For QCs based on trapped ions, architectures such as the quantum charge-coupled device (QCCD) are used to scale the number of qubits on a single device. However, the number of ions that can be hosted on a single quantum computing module is limited by the size of the chip being used. Therefore, a modular approach is of critical importance and requires quantum connections between individual modules. Here, we present the demonstration of a quantum matter-link in which ion qubits are transferred between adjacent QC modules. Ion transport between adjacent modules is realised at a rate of 2424 s -1 and with an infidelity associated with ion loss during transport below 7 × 10 -8 . Furthermore, we show that the link does not measurably impact the phase coherence of the qubit. The quantum matter-link constitutes a practical mechanism for the interconnection of QCCD devices. Our work will facilitate the implementation of modular QCs capable of fault-tolerant utility-scale quantum computation.
(© 2023. The Author(s).)
Databáze: MEDLINE
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