Nonperturbative Floquet engineering of the toric-code Hamiltonian and its ground state
Nonperturbative Floquet engineering of the toric-code Hamiltonian and its ground state
Petiziol, F.; Wimberger, S.; Eckardt, A.; Mintert, F.
We theoretically propose a quantum simulation scheme for the toric-code Hamiltonian, the paradigmatic model of a quantum spin liquid, based on time-periodic driving. We develop a hybrid continuous-digital strategy that exploits the commutativity of different terms in the target Hamiltonian. It allows one to realize the required four-body interactions in a nonperturbative way, attaining strong coupling and the suppression of undesired processes. In addition, we design an optimal protocol for preparing the topologically ordered ground states with high fidelity. A proof-of-principle implementation of a topological device and its use to simulate the topological phase transition are also discussed. The proposed scheme finds natural implementation in architectures of superconducting qubits with tunable couplings.
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Physical Review B 109(2024), 075126
Online First (2024) DOI: 10.1103/PhysRevB.109.075126
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Permalink: https://www.hzdr.de/publications/Publ-38801