A superconducting quantum simulator based on a photonic-bandgap metamaterial
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1.
California Institute of Technology
Abstract
Synthesizing many-body quantum systems with various ranges of interactions facilitates the study of quantum chaotic dynamics. Such extended interaction range can be enabled by using nonlocal degrees of freedom such as photonic modes in an otherwise locally connected structure. Here, we present a superconducting quantum simulator in which qubits are connected through an extensible photonic-bandgap metamaterial, thus realizing a one-dimensional Bose-Hubbard model with tunable hopping range and on-site interaction. Using individual site control and readout, we characterize the statistics of measurement outcomes from many-body quench dynamics, which enables in situ Hamiltonian learning. Further, the outcome statistics reveal the effect of increased hopping range, showing the predicted crossover from integrability to ergodicity. Our work enables the study of emergent randomness from chaotic many-body evolution and, more broadly, expands the accessible Hamiltonians for quantum simulation using superconducting circuits.
Additional Information
© 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. The authors thank A. Gorshkov, A. González-Tudela, D. Chang, O. Motrunich, R. Ma, F. Brandão, G. Refael, S. Meesala, V. Ferreira, G. Kim, A. Butler, and Z. Zheng for helpful discussions. We appreciate MIT Lincoln Laboratories for the provision of traveling-wave parametric amplifiers used for both spectroscopic and time-domain measurements in this work, and the AWS Center for Quantum Computing for the Eccosorb filters installed in the cryogenic setup for infrared filtering. We also thank the Quantum Machines team for technical support and discussions on the Quantum Orchestration Platform. This work was supported by the AFOSR Quantum Photonic Matter MURI (grant FA9550-16-1-0323), the DOE-BES Quantum Information Science Program (grant DE-SC0020152), the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (grant PHY-1125565) with support of the Gordon and Betty Moore Foundation, the Kavli Nanoscience Institute at Caltech, and the AWS Center for Quantum Computing. D.K.M. acknowledges support from the NSF QLCI program (2016245) and the DOE Quantum Systems Accelerator Center (contract no. 7568717). Author contributions: X.Z., E.K., D.K.M., S.C., and O.P. came up with the concept. X.Z. and E.K. planned the experiment, performed the device design and fabrication, and performed the measurements. X.Z., E.K., D.K.M., and S.C. analyzed the data. O.P. supervised the project. All authors contributed to the writing of the manuscript. The authors declare no competing interests. Data and materials availability: Experimental data shown in the main text and supplementary materials, as well as the simulation code, are available in Zenodo (42).Additional details
- Eprint ID
- 120113
- Resolver ID
- CaltechAUTHORS:20230316-941746000.1
- FA9550-16-1-0323
- Air Force Office of Scientific Research (AFOSR)
- DE-SC0020152
- DOE
- PHY-1125565
- NSF
- Gordon and Betty Moore Foundation
- AWS Center for Quantum Computing
- OMA-2016245
- NSF
- 7568717
- Department of Energy (DOE)
- Created
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2023-03-16Created from EPrint's datestamp field
- Updated
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2023-03-16Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute, Institute for Quantum Information and Matter, AWS Center for Quantum Computing