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Simulation of Interaction-Induced Chiral Topological Dynamics on a Digital Quantum Computer

Koh, Jin Ming and Tai, Tommy and Lee, Ching Hua (2022) Simulation of Interaction-Induced Chiral Topological Dynamics on a Digital Quantum Computer. Physical Review Letters, 129 (14). Art. No. 140502. ISSN 0031-9007. doi:10.1103/physrevlett.129.140502.

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Chiral edge states are highly sought after as paradigmatic topological states relevant to both quantum information processing and dissipationless electron transport. Using superconducting transmon-based quantum computers, we demonstrate chiral topological propagation that is induced by suitably designed interactions, instead of flux or spin-orbit coupling. Also different from conventional 2D realizations, our effective Chern lattice is implemented on a much smaller equivalent 1D spin chain, with sequences of entangling gates encapsulating the required time-reversal breaking. By taking advantage of the quantum nature of the platform, we circumvented difficulties from the limited qubit number and gate fidelity in present-day noisy intermediate-scale quantum era quantum computers, paving the way for the quantum simulation of more sophisticated topological states on very rapidly developing quantum hardware.

Item Type:Article
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URLURL TypeDescription
Koh, Jin Ming0000-0002-6130-5591
Tai, Tommy0000-0002-9478-5499
Lee, Ching Hua0000-0003-0690-3238
Additional Information:J. M. K. and T. T. thank Wei En Ng and Yong Han Phee of the National University of Singapore for discussions on the quantum simulation implementation. This work is supported by the con Grant No. NRF2021-QEP2-02-P09. The authors acknowledge the use of IBM Quantum services for this work. The views expressed are those of the authors and do not reflect the official policy or position of IBM or the IBM Quantum team.
Funding AgencyGrant Number
National Research Foundation (Singapore)NRF2021-QEP2-02-P09
Issue or Number:14
Record Number:CaltechAUTHORS:20221116-601553800.6
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117887
Deposited By: Research Services Depository
Deposited On:29 Nov 2022 17:40
Last Modified:29 Nov 2022 17:40

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