Noise-induced quantum synchronization
Quantum Physics
2022-12-20 v2 Statistical Mechanics
Abstract
Synchronization is a widespread phenomenon in science and technology. We here study noise-induced synchronization in a quantum spin chain subjected to local Gaussian white noise. We demonstrate stable (anti)synchronization between the endpoint magnetizations of a quantum model with transverse field of arbitrary length. Remarkably, we show that noise applied to a single spin suffices to reach stable (anti)synchronization, and demonstrate that the two synchronized end spins are entangled. We additionally determine the optimal noise amplitude that leads to the fastest synchronization along the chain, and further compare the optimal synchronization speed to the fundamental Lieb-Robinson bound for information propagation.
Cite
@article{arxiv.2206.02456,
title = {Noise-induced quantum synchronization},
author = {Finn Schmolke and Eric Lutz},
journal= {arXiv preprint arXiv:2206.02456},
year = {2022}
}