Optimal shortcut approach based on an easily obtained intermediate Hamiltonian
Optimal shortcut approach based on an easily obtained intermediate Hamiltonian
复制标题
基于容易获得的中间哈密顿量的最优捷径方法
DOI：
10.1103/physreva.95.062319
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发表时间：
2017-06-12
影响因子：
2.9
通讯作者：
Zheng, Shi-Biao
中科院分区：
文献类型：
--
作者：
Chen, Ye-Hong;Shi, Zhi-Cheng;Zheng, Shi-Biao
We present a general approach to speed up the adiabatic process without adding the traditional counterdiabatic driving (CD) Hamiltonian. The strategy is to design an easy-to-get intermediate Hamiltonian to connect the original Hamiltonian and final transitionless Hamiltonian. With final transitionless Hamiltonian, the same target can be achieved as in the adiabatic process governed by the original Hamiltonian, but in a shorter time. We apply the present approach to a three-level system, and the result shows that the final transitionless Hamiltonian usually has the same structure as the original Hamiltonian but with different time-dependent coefficients, allowing speedup to be achieved in a much easier way compared to previous methods.
