Exploring nonlinear dynamics in periodically driven time crystal from synchronization to chaotic motion.

ABSTRACT: The coupled electron-nuclear spin system in an InGaAs semiconductor as testbed of nonlinear dynamics can develop auto-oscillations, resembling time-crystalline behavior, when continuously excited by a circularly polarized laser. We expose this system to deviations from continuous driving by periodic modulation of the excitation polarization, revealing a plethora of nonlinear phenomena that depend on modulation frequency and depth. We find ranges in which the system's oscillations are entrained with the modulation frequency. The width of these ranges depends on the polarization modulation depth, resulting in an Arnold tongue pattern. Outside the tongue, the system shows a variety of fractional subharmonic responses connected through bifurcation jets when varying the modulation frequency. He

SUBMITTER: Greilich A 

PROVIDER: S-EPMC11937429 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature