Fast and Robust Spin Manipulation in a Quantum Dot by Electric Fields
Fast and Robust Spin Manipulation in a Quantum Dot by Electric Fields
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通过电场快速、鲁棒地操纵量子点自旋
DOI：
10.1103/physrevlett.109.206602
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发表时间：
2012-11-13
影响因子：
8.6
通讯作者：
Muga, J. G.
中科院分区：
文献类型：
--
作者：
Ban, Yue;Chen, Xi;Muga, J. G.
我们应用基于不变量的逆工程方法，通过含时电场控制弱磁场中具有自旋-轨道耦合的量子点的自旋动力学。设计的电场提供了一条绝热过程的捷径，可以快速反转自旋，从而避免退相干效应。这种方法对于依赖于器件的噪声是健壮的，可以为基于自旋的量子信息处理打开新的可能性。
We apply an invariant-based inverse engineering method to control, by time-dependent electric fields, the spin dynamics in a quantum dot with spin-orbit coupling in a weak magnetic field. The designed electric fields provide a shortcut to adiabatic processes that flip the spin rapidly, thus avoiding decoherence effects. This approach, being robust with respect to the device-dependent noise, can open new possibilities for spin-based quantum information processing.