Decoherence of entangled kaons and its connection to entanglement measures

被引：42

作者：

Bertlmann, RA ^{[1
]}

Durstberger, K ^{[1
]}

Hiesmayr, BC ^{[1
]}

机构：

[1] Univ Vienna, Inst Theoret Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.68.012111

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the time evolution of the entangled kaon system by considering the Liouville-von Neumann equation with an additional term which allows for decoherence. We choose, as generators of decoherence, the projectors to the two-particle eigenstates of the Hamiltonian. Then we compare this model with the data of the CPLEAR experiment and find in this way an upper bound on strength lambda of the decoherence. We also relate lambda to an effective decoherence parameter zeta considered previously in literature. Finally we discuss our model in the light of different measures of entanglement, i.e., von Neumann entropy S, entanglement of formation E, and concurrence C, and we relate decoherence parameter zeta to the loss of entanglement: 1-E.

引用

页数：9

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