论文标题
在Lee-Yang Dephasing通道下的旋转挤压和同意
Spin squeezing and concurrence under Lee-Yang dephasing channels
论文作者
论文摘要
Lee-Yang Zeros是一对一的映射到零，在与多体系统相连的探针旋转的连贯性中。在这里，我们研究了在两种不同类型的Lee-Yang Dephasing通道下进行的自旋挤压，其中该分区在Lee-Yang Zeros上的功能消失了。在将探针耦合到自己的浴缸的第一类通道下，我们发现旋转挤压的性能得到了改善，最大的最大性仅取决于初始状态。此外，所有同意消失的域的中心都对应于李杨零。在将探针耦合到一个浴的第二种类型的通道下，旋转挤压的性能并没有改善，但是，同意的共同点在两个通道下都具有几乎相同的特性。这些结果为多体物理学提供了新的实验可能性，并扩展了探针浴系统中纠缠与旋转挤压之间关系的新观点。
The Lee-Yang zeros are one-to-one mapping to zeros in the coherence of a probe spin coupled to a many-body system. Here, we study the spin squeezing under two different types of Lee-Yang dephasing channels in which the partition functions vanish at Lee-Yang zeros. Under the first type of the channels in which probes are coupled to their own bath, we find that the performance of spin squeezing is improved and its maximum only depends on the initial state. Moreover, the centers of all the concurrence vanishing domains are corresponding to the Lee-Yang zeros. Under the second type of the channels in which probes are coupled to one bath together, the performance of spin squeezing is not improved, however, the concurrence shares almost the same properties under both channels. These results provide new experimental possibilities in many-body physics and extend a new perspective of the relationship between the entanglement and spin squeezing in probes-bath systems.
