Degree of Quantumness in Quantum Synchronization
Abstract
We introduce the concept of degree of quantumness in quantum synchronization, a measure of the quantum nature of synchronization in quantum systems. Following techniques from quantum information, we propose the number of non-commuting observables that synchronize as a measure of quantumness. This figure of merit is compatible with already existing synchronization measurements, and it captures different physical properties. We illustrate it in a quantum system consisting of two weakly interacting cavity-qubit systems, which are coupled via the exchange of bosonic excitations between the cavities. Moreover, we study the synchronization of the expectation values of the Pauli operators and we propose a feasible superconducting circuit setup. Finally, we discuss the degree of quantumness in the synchronization between two quantum van der Pol oscillators.
Cite
@article{arxiv.1705.04614,
title = {Degree of Quantumness in Quantum Synchronization},
author = {H. Eneriz and D. Z. Rossatto and F. A. Cárdenas-L'opez and E. Solano and M. Sanz},
journal= {arXiv preprint arXiv:1705.04614},
year = {2020}
}