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Going beyond gadgets: the importance of scalability for analogue quantum simulators

Author

Listed:
  • Dylan Harley

    (University of Copenhagen)

  • Ishaun Datta

    (Stanford University)

  • Frederik Ravn Klausen

    (University of Copenhagen)

  • Andreas Bluhm

    (CNRS, Grenoble INP, LIG)

  • Daniel Stilck França

    (UCBL, CNRS, Inria)

  • Albert H. Werner

    (University of Copenhagen)

  • Matthias Christandl

    (University of Copenhagen)

Abstract

Quantum hardware has the potential to efficiently solve computationally difficult problems in physics and chemistry to reap enormous practical rewards. Analogue quantum simulation accomplishes this by using the dynamics of a controlled many-body system to mimic those of another system; such a method is feasible on near-term devices. We show that previous theoretical approaches to analogue quantum simulation suffer from fundamental barriers which prohibit scalable experimental implementation. By introducing a new mathematical framework and going beyond the usual toolbox of Hamiltonian complexity theory with an additional resource of engineered dissipation, we show that these barriers can be overcome. This provides a powerful new perspective for the rigorous study of analogue quantum simulators.

Suggested Citation

  • Dylan Harley & Ishaun Datta & Frederik Ravn Klausen & Andreas Bluhm & Daniel Stilck França & Albert H. Werner & Matthias Christandl, 2024. "Going beyond gadgets: the importance of scalability for analogue quantum simulators," Nature Communications, Nature, vol. 15(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50744-9
    DOI: 10.1038/s41467-024-50744-9
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    1. Dolev Bluvstein & Harry Levine & Giulia Semeghini & Tout T. Wang & Sepehr Ebadi & Marcin Kalinowski & Alexander Keesling & Nishad Maskara & Hannes Pichler & Markus Greiner & Vladan Vuletić & Mikhail D, 2022. "A quantum processor based on coherent transport of entangled atom arrays," Nature, Nature, vol. 604(7906), pages 451-456, April.
    2. Samson Wang & Enrico Fontana & M. Cerezo & Kunal Sharma & Akira Sone & Lukasz Cincio & Patrick J. Coles, 2021. "Noise-induced barren plateaus in variational quantum algorithms," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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