文献类型：期刊文献

英文题名：Viewing Majorana Bound States by Rabi Oscillations

作者：Wang, Zhi[1,2];Liang, Qi-Feng[2,3];Yao, Dao-Xin[1];Hu, Xiao[2]

机构：[1]Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China;[2]Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan;[3]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2015

卷号：5

外文期刊名：SCIENTIFIC REPORTS

收录：SCI-EXPANDED(收录号：WOS:000357575000001)、、Scopus(收录号：2-s2.0-84936869474)、WOS

基金：This work was supported by NSFC-11304400, SRFDP-20130171120015, 985 Project of Sun Yat-Sen University, China, WPI Initiative on Materials Nanoarchitectonics, MEXT, Japan, and Grant-in-Aid for Scientific Research under the Innovative Area "Topological Quantum Phenomena" (No. 25103723), MEXT, Japan.

语种：英文

外文摘要：We propose to use Rabi oscillation as a probe to view the fractional Josepshon relation (FJR) associated with Majorana bound states (MBSs) expected in one-dimensional topological superconductors. The system consists of a quantum dot (QD) and an rf-SQUID with MBSs at the Josephson junction. Rabi oscillations between energy levels formed by MBSs are induced by ac gate voltage controlling the coupling between QD and MBS when the photon energy proportional to the ac frequency matches gap between quantum levels formed by MBSs and QD. As a manifestation of the Rabi oscillation in the whole system involving MBSs, the electron occupation on QD oscillates with time, which can be measured by charge sensing techniques. With Floquet theorem and numerical analysis we reveal that from the resonant driving frequency for coherent Rabi oscillation one can directly map out the FJR cos(pi Phi/Phi(circle)) as a signature of MBSs, with Phi the magnetic flux through SQUID and Phi(circle) = hc/2e the flux quantum. The present scheme is expected to provide a clear evidence for MBSs under intensive searching.