论文标题
噪声诱导的量子同步
Noise-induced quantum synchronization
论文作者
论文摘要
同步是科学技术中的普遍现象。我们在这里研究噪声诱导的量子自旋链中的同步，该量子链受到局部高斯白噪声。我们证明了具有任意长度的横向场的量子$ xy $模型的端点磁化之间的稳定（反）同步。值得注意的是，我们表明，将噪声应用于单个自旋足以达到稳定（反）同步，并证明两个同步端旋转是纠缠的。我们还确定导致沿链的最快同步的最佳噪声幅度，并进一步将最佳同步速度与基本的Lieb-Robinson绑定到信息传播。
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 $XY$ 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.
