Kavli Affiliate: Joel E. Moore
| First 5 Authors: Jiarui Liu, Jiarui Liu, , ,
| Summary:
Synchronization is a hallmark of nonlinear dynamics. It drives self-organized
behavior across systems ranging from astronomy to chemistry. Among the simplest
systems, the van der Pol oscillator captures the essence of limit-cycle
behavior and forms the basis for diverse physical and biological models. While
mutual synchronization has long been established in classical systems, it has
yet to be experimentally observed in quantum limit-cycle oscillators, despite a
decade of theoretical exploration. Here, we demonstrate synchronization between
two quantum van der Pol oscillators using trapped ions. The synchronized state
manifests itself as a stable relative phase, while the individual oscillator
phases remain inaccessible. In view of potential sensing applications, we
investigate the response of the synchronized system to an external field. Our
results establish limit-cycle synchronization in the quantum regime and pave
the way toward exploring complex synchronized dynamics in larger networks,
where persistence of quantum features remains an open question.
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