Departamento de Química-Física, UPV/EHU, Apartado 644, 48080 Bilbao, Spain.
Phys Rev Lett. 2012 Nov 16;109(20):206602. doi: 10.1103/PhysRevLett.109.206602. Epub 2012 Nov 13.
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.
我们应用基于不变量的逆向工程方法，通过时变电场控制具有弱磁场中自旋轨道耦合的量子点中的自旋动力学。所设计的电场提供了快速翻转自旋的绝热过程的捷径，从而避免了退相干效应。这种方法对器件相关噪声具有鲁棒性，可为基于自旋的量子信息处理开辟新的可能性。
