Entanglement witnessing in superconducting beamsplitters

被引：8
|
作者：
Soller, H. [1 ]
Hofstetter, L. [2 ]
Reeb, D. [3 ]
机构：
[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany
[2] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland
[3] Tech Univ Munich, Dept Math, D-85748 Garching, Germany
来源：
EPL | 2013年 / 102卷 / 05期
关键词：
MAGNETIC TUNNEL-JUNCTIONS; NOISE CROSS-CORRELATION; QUANTUM; RESONANCE; ELECTRONS; TORQUE;
D O I：
10.1209/0295-5075/102/50009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyse a large class of superconducting beamsplitters for which the Bell parameter (CHSH violation) is a simple function of the spin detector efficiency. For these superconducting beamsplitters all necessary information to compute the Bell parameter can be obtained in Y-junction setups for the beamsplitter. Using the Bell parameter as an entanglement witness, we propose an experiment which allows to verify the presence of entanglement in Cooper pair splitters. Copyright (c) EPLA, 2013
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页数：5
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