Simulation of interaction-induced chiral topological dynamics on a digital quantum computer

• URL: http://arxiv.org/abs/2207.14322v3
• Date: Thu, 29 Sep 2022 13:31:07 GMT
• Title: Simulation of interaction-induced chiral topological dynamics on a digital quantum computer
• Authors: Jin Ming Koh, Tommy Tai, Ching Hua Lee
• Abstract summary: Chiral edge states are sought-after as paradigmatic topological states relevant to quantum information processing and electron transport. We demonstrate chiral topological propagation that is induced by suitably designed interactions, instead of flux or spin-orbit coupling. 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 (NISQ)-era quantum computers.
• Score: 3.205614282399206
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 (NISQ)-era quantum computers, paving the way for the quantum simulation of more sophisticated topological states on very rapidly developing quantum hardware.

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