论文标题
leggett-garg大分和时间相关性
Leggett-Garg Macrorealism and temporal correlations
论文作者
论文摘要
Leggett和Garg制定的大型现实主义模型编码我们对经典系统的直觉，即物理量具有确定的值，可以用最小的干扰来测量，并目的是测试宏观量子相干效应。相关的不平等现象涉及系统上的顺序测量统计数据，被量子机械预测和实验观察结果违反了。但是，此类测试受到漏洞的影响：假设测量干扰的特定模型可以回收经典的解释。我们回顾了表征大牙和量子时间相关性以及与Leggett-Garg检验相关的漏洞的最新理论和实验进展。最后，我们回顾了非经典时间相关性的最新定义，这些定义通过放松测量扰动的假设及其在顺序量子信息处理中的应用来超越大型现实主义模型。
Leggett and Garg formulated macrorealist models encoding our intuition on classical systems, i.e., physical quantities have a definite value that can be measured with minimal disturbance, and with the goal of testing macroscopic quantum coherence effects. The associated inequalities, involving the statistics of sequential measurements on the system, are violated by quantum mechanical predictions and experimental observations. Such tests, however, are subject to loopholes: a classical explanation can be recovered assuming specific models of measurement disturbance. We review recent theoretical and experimental progress in characterizing macrorealist and quantum temporal correlations, and in closing loopholes associated with Leggett-Garg tests. Finally, we review recent definitions of nonclassical temporal correlations, which go beyond macrorealist models by relaxing the assumption on the measurement disturbance, and their applications in sequential quantum information processing.
