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arXiv 1111.7031cond-mat.mes-hallcond-mat.supr-conquant-ph
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利用量子点间的非局域纠缠探测Majorana费米子

Detecting Majorana fermions by nonlocal entanglement between quantum dots

Zhi Wang, Xiao Hu

摘要:

两个量子点之间的非定域纠缠可以通过马约拉纳费米子产生。一维拓扑超导体两端的两个马约拉纳费米子形成一个非定域费米子能级,耦合到靠近两端的两个量子点的占据态,整个系统将进入纠缠态。通过电容器引入充电能量后,整个系统的纠缠可以通过两个量子点之间的非局域纠缠表现出来。也就是说,当测量量子点的电子占据时,一个量子点的测量结果将影响另一个量子点的测量结果。两个量子点之间的这种非定域纠缠是由两个马约拉纳费米子构成的费米子能级的非定域性质的有力证据。

英文摘要:

Nonlocal entanglement between two quantum dots can be generated through Majorana fermions. The two Majorana fermions at the ends of an one-dimensional topological superconductor form a nonlocal fermion level, coupling to the occupation states of two quantum dots put close to the two ends, and the entire system will come into an entangled state. After introducing a charging energy by a capacitor, entanglement of the entire system can manifest itself through the nonlocal entanglement between the two quantum dots. That is, when measuring the electron occupations of the quantum dots, the measurement result of one quantum dot will influence the measurement result of the other quantum dot. This nonlocal entanglement between the two quantum dots is a strong evidence of the nonlocal nature of the fermion level constructed by two Majorana fermions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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