Viewing Majorana Bound States by Rabi Oscillations.
Viewing Majorana Bound States by Rabi Oscillations.
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通过拉比振荡观察马约拉纳束缚态
DOI：
10.1038/srep11686
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发表时间：
2015-07-08
影响因子：
4.6
通讯作者：
Hu X
中科院分区：
文献类型：
--
作者：
Wang Z;Liang QF;Yao DX;Hu X
我们建议使用RABI振荡作为探测器，以查看与Majorana结合状态（MBS）相关的分数Josepshon关系（FJR），该系统由量子点（QD）组成。当光子能量比例时，QD和MB之间到AC频率与MBS形成的量子水平与QD形成的量子，作为整个系统中的Rabi振荡的表现，涉及MBS的电子振荡，可以通过时间来测量QD振荡的电子振动，这可以通过电荷传感技术来测量。 ）作为MBS的签名， φ通过鱿鱼和φ0= hc/2e磁通量量子量子。
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(πΦ/Φ0) as a signature of MBSs, with Φ the magnetic flux through SQUID and Φ0=hc/2ethe flux quantum. The present scheme is expected to provide a clear evidence for MBSs under intensive searching.
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