论文标题
量子波动的上下文性，其特征是纠缠状态的条件弱价值
Contextuality of quantum fluctuations characterized by conditional weak values of entangled states
论文作者
论文摘要
在任何对该物理特性至少部分敏感的测量值的测量统计中，可以观察到物理特性的量子波动。量子理论表明，基于确定这些值并确定弱值的有效值取决于特定的测量上下文，并确定为描述量子波动对测量上下文的依赖性的上下文值。在这里，通过考虑与量子参考纠结的系统来探索经典统计和量子上下文之间的关系。然后，系统的量子波动可以通过参考的精确投影测量值来指导，从而根据参考的测量确定的有效状态准备上下文，从而导致量子波动的不同上下文值。结果表明，混合状态统计与广泛的潜在上下文一致，表明上下文的精确定义需要在状态准备和测量中最大的量子相干性。
The quantum fluctuations of a physical property can be observed in the measurement statistics of any measurement that is at least partially sensitive to that physical property. Quantum theory indicates that the effective distribution of values taken by the physical property depends on the specific measurement context based on which these values are determined and weak values have been identified as the contextual values describing this dependence of quantum fluctuations on the measurement context. Here, the relation between classical statistics and quantum contextuality is explored by considering systems entangled with a quantum reference. The quantum fluctuations of the system can then be steered by precise projective measurements of the reference, resulting in different contextual values of the quantum fluctuations depending on the effective state preparation context determined by the measurement of the reference. The results show that mixed state statistics are consistent with a wide range of potential contexts, indicating that the precise definition of a context requires maximal quantum coherence in both state preparation and measurement.
