Thermalization and Criticality on an Analog-Digital Quantum Simulator Article Swipe

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Trond I. Andersen , Nikita Astrakhantsev , Amir H. Karamlou , Julia Berndtsson , Johannes Motruk , Aaron Szasz , Jonathan A. Gross , Tom Westerhout , Yaxing Zhang , Ebrahim Forati , Dario Rossi , Bryce Kobrin , Agustín Di Paolo , Andrey R. Klots , Ilya Drozdov , Vladislav D. Kurilovich , Andre Petukhov , L. B. Ioffe , Andreas Elben , Aniket Rath , Vittorio Vitale , Benoît Vermersch , Rajeev Acharya , Laleh Aghababaie Beni , Kyle Anderson , M. Ansmann , Frank Arute , Kunal Arya , Abraham Asfaw , Juan Atalaya , Brian Ballard , Joseph C. Bardin , Andreas Bengtsson , Alexander Bilmes , Gina Bortoli , Alexandre Bourassa , Jenna Bovaird , L. Brill , Michael Broughton , David A. Browne , Brett Buchea , Bob B. Buckley , David A. Buell , T. Burger , Brian Burkett , Nicholas Bushnell , Anthony Cabrera , Juan Campero , Hung-Shen Chang , Zijun Chen , B. Chiaro , Jahan Claes , Agnetta Y. Cleland , Josh Cogan , Roberto Collins , Paul Conner , William Courtney , Alexander L. Crook , Sayan Das , Dripto M. Debroy , Laura de Lorenzo , Alexander Del Toro Barba , Sean Demura , Michel Devoret , Paul Donohoe , A. Dunsworth , Clint Earle , Alec Eickbusch , Aviv Moshe Elbag , Mahmoud Elzouka , Catherine Erickson , Lara Faoro , Reza Fatemi , Vinicius S. Ferreira , Leslie Flores Burgos , Austin G. Fowler , Brooks Foxen , Suhas Ganjam , Robert Gasca , W. Giang , Craig Gidney , D. Gilboa , Marissa Giustina , Raja Gosula , Alejandro Grajales Dau , Dietrich Graumann , Alexander T. Greene , Steve Habegger , Michael C. Hamilton , Monica Hansen , Matthew P. Harrigan , Sean D. Harrington , Stephen Heslin , Paula Heu , Gordon Hill , M. R. Hoffmann , Hsin-Yuan Huang , Trent Huang , Ashley Huff , William J. Huggins ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2405.17385

Understanding how interacting particles approach thermal equilibrium is a major challenge of quantum simulators. Unlocking the full potential of such systems toward this goal requires flexible initial state preparation, precise time evolution, and extensive probes for final state characterization. We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution, with performance beyond the reach of classical simulation in cross-entropy benchmarking experiments. Emulating a two-dimensional (2D) XY quantum magnet, we leverage a wide range of measurement techniques to study quantum states after ramps from an antiferromagnetic initial state. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions attributed to the interplay between quantum and classical coarsening of the correlated domains. This interpretation is corroborated by injecting variable energy density into the initial state, which enables studying the effects of the eigenstate thermalization hypothesis (ETH) in targeted parts of the eigenspectrum. Finally, we digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization. These results establish the efficacy of superconducting analog-digital quantum processors for preparing states across many-body spectra and unveiling their thermalization dynamics.

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Criticality Thermalisation Quantum simulator Quantum Computer science Simulation Physics Quantum mechanics Quantum computer Nuclear physics

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2405.17385
PDF: https://arxiv.org/pdf/2405.17385
OA Status: green
Cited By: 4
Related Works: 10
OpenAlex ID: https://openalex.org/W4399144157

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DOI: https://doi.org/10.48550/arxiv.2405.17385

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Title: Thermalization and Criticality on an Analog-Digital Quantum Simulator

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Language: en

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Publication year: 2024

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Publication date: 2024-05-27

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Authors: Trond I. Andersen, Nikita Astrakhantsev, Amir H. Karamlou, Julia Berndtsson, Johannes Motruk, Aaron Szasz, Jonathan A. Gross, Tom Westerhout, Yaxing Zhang, Ebrahim Forati, Dario Rossi, Bryce Kobrin, Agustín Di Paolo, Andrey R. Klots, Ilya Drozdov, Vladislav D. Kurilovich, Andre Petukhov, L. B. Ioffe, Andreas Elben, Aniket Rath, Vittorio Vitale, Benoît Vermersch, Rajeev Acharya, Laleh Aghababaie Beni, Kyle Anderson, M. Ansmann, Frank Arute, Kunal Arya, Abraham Asfaw, Juan Atalaya, Brian Ballard, Joseph C. Bardin, Andreas Bengtsson, Alexander Bilmes, Gina Bortoli, Alexandre Bourassa, Jenna Bovaird, L. Brill, Michael Broughton, David A. Browne, Brett Buchea, Bob B. Buckley, David A. Buell, T. Burger, Brian Burkett, Nicholas Bushnell, Anthony Cabrera, Juan Campero, Hung-Shen Chang, Zijun Chen, B. Chiaro, Jahan Claes, Agnetta Y. Cleland, Josh Cogan, Roberto Collins, Paul Conner, William Courtney, Alexander L. Crook, Sayan Das, Dripto M. Debroy, Laura de Lorenzo, Alexander Del Toro Barba, Sean Demura, Michel Devoret, Paul Donohoe, A. Dunsworth, Clint Earle, Alec Eickbusch, Aviv Moshe Elbag, Mahmoud Elzouka, Catherine Erickson, Lara Faoro, Reza Fatemi, Vinicius S. Ferreira, Leslie Flores Burgos, Austin G. Fowler, Brooks Foxen, Suhas Ganjam, Robert Gasca, W. Giang, Craig Gidney, D. Gilboa, Marissa Giustina, Raja Gosula, Alejandro Grajales Dau, Dietrich Graumann, Alexander T. Greene, Steve Habegger, Michael C. Hamilton, Monica Hansen, Matthew P. Harrigan, Sean D. Harrington, Stephen Heslin, Paula Heu, Gordon Hill, M. R. Hoffmann, Hsin-Yuan Huang, Trent Huang, Ashley Huff, William J. Huggins

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Landing page: https://arxiv.org/abs/2405.17385

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Concepts: Criticality, Thermalisation, Quantum simulator, Quantum, Computer science, Simulation, Physics, Quantum mechanics, Quantum computer, Nuclear physics

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Cited by: 4

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