Probing the non-locality of Majorana fermions via quantum correlations.
Probing the non-locality of Majorana fermions via quantum correlations.
复制标题
通过量子关联探测马约拉纳费米子的非定域性
DOI:
10.1038/srep04930
复制
发表时间:
2014-05-12
影响因子:
4.6
通讯作者:
You JQ
中科院分区:
文献类型:
--
作者:
Li J;Yu T;Lin HQ;You JQ
Majorana fermions (MFs) are exotic particles that are their own anti-particles. Recently, the search for the MFs occurring as quasi-particle excitations in solid-state systems has attracted widespread interest, because of their fundamental importance in fundamental physics and potential applications in topological quantum computation based on solid-state devices. Here we study the quantum correlations between two spatially separate quantum dots induced by a pair of MFs emerging at the two ends of a semiconductor nanowire, in order to develop a new method for probing the MFs. We find that without the tunnel coupling between these paired MFs, quantum entanglement cannot be induced from an unentangled (i.e., product) state, but quantum discord is observed due to the intrinsic nonlocal correlations of the paired MFs. This finding reveals that quantum discord can indeed demonstrate the intrinsic non-locality of the MFs formed in the nanowire. Also, quantum discord can be employed to discriminate the MFs from the regular fermions. Furthermore, we propose an experimental setup to measure the onset of quantum discord due to the nonlocal correlations. Our approach provides a new, and experimentally accessible, method to study the Majorana bound states by probing their intrinsic non-locality signature.
登录
查看更多内容
影响因子:
8.6
作者:
Werlang, T. G.;Trippe, C.;Rigolin, Gustavo
通讯作者:
Rigolin, Gustavo
影响因子:
2.9
作者:
Zurek, WH
通讯作者:
Zurek, WH
影响因子:
8.6
作者:
Sau, Jay D.;Lutchyn, Roman M.;Das Sarma, S.
通讯作者:
Das Sarma, S.
影响因子:
8.6
作者:
Ollivier, H;Zurek, WH
通讯作者:
Zurek, WH
影响因子:
8.6
作者:
Bolech, C. J.;Demler, Eugene
通讯作者:
Demler, Eugene