论文标题
量子转向标准之间互补关系的实验证明
Experimental demonstration of complementarity relations between quantum steering criteria
论文作者
论文摘要
一个系统立即通过使用局部测量来影响另一系统的能力被视为量子转向,可以通过各种转向标准检测到。最近,Mondal等。 [物理。 Rev. A 98,052330(2018)]得出了相干转向标准的互补关系,并揭示了可以通过子系统的平均相干性观察到系统的量子转向。在这里,我们通过采用两光钟状状态和三个保利操作员,实验验证量子转向标准之间的互补关系。结果表明,如果准备好的量子状态可以违反两个设置连贯的转向标准,并被证明是可转让的状态,那么它不能违反互补环境标准。在这两个相干转向标准之间建立互补关系的三个测量设置不平等始终存在于实验中。此外,我们通过实验证明,相干转向标准的优势取决于连贯度量的选择。与基于L1相干性和相干性相对熵的两个设定相干转向标准相比,我们的实验结果表明,基于相干性偏斜信息的转向标准在检测量子状态的可置换性方面更加强大。因此,我们的实验演示可以加深对量子转向与量子相干性之间关系的理解。
The ability that one system immediately affects another one by using local measurements is regarded as quantum steering, which can be detected by various steering criteria. Recently, Mondal et al. [Phys. Rev. A 98, 052330 (2018)] derived the complementarity relations of coherence steering criteria, and revealed that the quantum steering of system can be observed through the average coherence of subsystem. Here, we experimentally verify the complementarity relations between quantum steering criteria by employing two-photon Bell-like states and three Pauli operators. The results demonstrate that if prepared quantum states can violate two setting coherence steering criteria and turn out to be steerable states, then it cannot violate the complementary settings criteria. Three measurement settings inequality, which establish a complementarity relation between these two coherence steering criteria, always holds in experiment. Besides, we experimentally certify that the strengths of coherence steering criteria dependent on the choice of coherence measure. In comparison with two setting coherence steering criteria based on l1 norm of coherence and relative entropy of coherence, our experimental results show that the steering criterion based on skew information of coherence is more stronger in detecting the steerability of quantum states. Thus, our experimental demonstrations can deepen the understanding of the relation between the quantum steering and quantum coherence.