论文标题
嵌入开放量子系统中的杨利 - 量子质量
Embedding the Yang-Lee Quantum Criticality in Open Quantum Systems
论文作者
论文摘要
Yang-Lee边缘的奇异性是一种典型的单身关键现象，伴随着异常的缩放定律。但是，这种关键现象涉及的假想磁场使其物理实施变得困难。通过调用量子 - 古典对应关系，将Yang-Lee边缘的奇异性嵌入具有Ancilla量子的量子系统中，我们证明了在开放量子系统中对非单身量子关键性的物理实现。在这里，在量子测量后引起的特殊点上，与奇异点确定了单身关键性。
The Yang-Lee edge singularity is a quintessential nonunitary critical phenomenon accompanied by anomalous scaling laws. However, an imaginary magnetic field involved in this critical phenomenon makes its physical implementation difficult. By invoking the quantum-classical correspondence to embed the Yang-Lee edge singularity in a quantum system with an ancilla qubit, we demonstrate a physical realization of the nonunitary quantum criticality in an open quantum system. Here the nonunitary criticality is identified with the singularity at an exceptional point caused by postselection of quantum measurement.
