Fisher information as general metrics of quantum synchronization
- URL: http://arxiv.org/abs/2306.06897v1
- Date: Mon, 12 Jun 2023 07:03:59 GMT
- Title: Fisher information as general metrics of quantum synchronization
- Authors: Yuan Shen, Hong Yi Soh, Leong-Chuan Kwek, Weijun Fan
- Abstract summary: We propose using classical and quantum Fisher information (FI) as alternative metrics to detect and measure quantum synchronization.
We show advantages in FI-based measures, especially in 2-to-1 synchronization.
- Score: 23.786196134544927
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum synchronization has emerged as a crucial phenomenon in quantum
nonlinear dynamics with potential applications in quantum information
processing. Multiple measures for quantifying quantum synchronization exist.
However, there is currently no widely agreed metric that is universally
adopted. In this paper, we propose using classical and quantum Fisher
information (FI) as alternative metrics to detect and measure quantum
synchronization. We establish the connection between FI and quantum
synchronization, demonstrating that both classical and quantum FI can be
deployed as more general indicators of quantum phase synchronization, in some
regimes where all other existing measures fail to provide reliable results. We
show advantages in FI-based measures, especially in 2-to-1 synchronization.
Furthermore, we analyze the impact of noise on the synchronization measures,
revealing the robustness and susceptibility of each method in the presence of
dissipation and decoherence. Our results open up new avenues for understanding
and exploiting quantum synchronization.
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