作为广义测量的Haroche-Ramsey实验
The Haroche-Ramsey experiment as a generalized measurement
摘要：
一些原子束实验，与拉姆齐实验和最近由布鲁恩等人进行的实验有关，在研究补充性问题时。三种不同的程序来获得信息的状态的传入原子进行了比较。明确计算了正算子值测度。它表明，在原则上，它是可以选择的实验安排，以便承认作为一个联合的非理想测量产生干扰和“哪一种方式”的信息的解释。不同测量的比较给出了洞察的问题，即哪些信息是由（广义）量子力学测量提供。为此目的，希尔伯特-施密特空间的子空间，跨越的运营商的POVM，被确定为不同的测量安排和不同的参数值。
英文摘要：
A number of atomic beam experiments, related to the Ramsey experiment and a recent experiment by Brune et al., are studied with respect to the question of complementarity. Three different procedures for obtaining information on the state of the incoming atom are compared. Positive operator-valued measures are explicitly calculated. It is demonstrated that, in principle, it is possible to choose the experimental arrangement so as to admit an interpretation as a joint non-ideal measurement yielding interference and ``which-way'' information. Comparison of the different measurements gives insight into the question of which information is provided by a (generalized) quantum mechanical measurement. For this purpose the subspaces of Hilbert-Schmidt space, spanned by the operators of the POVM, are determined for different measurement arrangements and different values of the parameters.
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