量子记忆效应的高分辨率探测
Probing Quantum Memory Effects with High Resolution
摘要：
被捕获的原子离子通过采用非马尔可夫度量使得能够精确量化内部和外部自由度之间的信息流[H. P. Breuer等人，物理修订信函103，210401（2009）]。我们揭示了在量子力学中投影测量的性质导致了这种测量的基本的、非平凡的偏差。我们观察和研究的功能依赖这种偏见，允许演示应用程序的本地量子探测。我们的方法的扩展可以作为一个通用的参考，相关的理解复杂系统。
英文摘要：
Trapped atomic ions enable a precise quantification of the flow of information between internal and external degrees of freedom by employing a non-Markovianity measure [H.-P. Breuer et al., Phys. Rev. Lett. 103, 210401 (2009)]. We reveal that the nature of projective measurements in quantum mechanics leads to a fundamental, nontrivial bias in this measure. We observe and study the functional dependence of this bias to permit a demonstration of applications of local quantum probing. An extension of our approach can act as a versatile reference, relevant for understanding complex systems.
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