Electron-spin manipulation and resonator readout in a double-quantum-dot nanoelectromechanical system.
Electron-spin manipulation and resonator readout in a double-quantum-dot nanoelectromechanical system.
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DOI：
10.1103/physrevlett.100.136802
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发表时间：
2007-09
影响因子：
8.6
通讯作者：
Neill Lambert;I. Mahboob;M. Pioro-Ladrière;Yasuhiro Tokura;S. Tarucha;Hiroshi Yamaguchi
中科院分区：
文献类型：
--
作者：
Neill Lambert;I. Mahboob;M. Pioro-Ladrière;Yasuhiro Tokura;S. Tarucha;Hiroshi Yamaguchi
我们演示了如何将纳米机械谐振器磁耦合到限制两个电子的双量子点，可以操纵单个电子自旋和读出谐振器的自然频率。当拉莫尔频率与谐振器频率匹配时，其中一个点中的电子自旋可以被磁化振荡器选择性地和相干地翻转。通过同时测量双电子双量子点的电荷状态，可以检测这种跃迁，从而能够确定机械振荡器的固有频率和位移。
We demonstrate how magnetically coupling a nanomechanical resonator to a double quantum dot confining two electrons can enable the manipulation of a single electron spin and the readout of the resonator's natural frequency. When the Larmor frequency matches the resonator frequency, the electron spin in one of the dots can be selectively and coherently flipped by the magnetized oscillator. By simultaneously measuring the charge state of the two-electron double quantum dots, this transition can be detected thus enabling the natural frequency and displacement of the mechanical oscillator to be determined.