Realization of a discrete time crystal on 57 qubits of a quantum computer.

ABSTRACT: Unconventional dynamical phases that violate ergodicity have been a subject of extensive research in recent years. A periodically driven system is naively expected to lose all memory of its initial state due to thermalization, yet this can be avoided in the presence of many-body localization. A discrete time crystal represents a driven system whose local observables spontaneously break time translation symmetry and retain memory of the initial state indefinitely. Here, we report the observation of a discrete time crystal on a chain consisting of 57 superconducting qubits on a state-of-the-art quantum computer. We probe random initial states and compare the cases of vanishing and finite disorder to distinguish many-body localization from prethermal dynamics. We further report results on the

SUBMITTER: Frey P 

PROVIDER: S-EPMC8890700 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature