Realization of invariant-based shortcuts to population inversion with a superconducting circuit
Zhikun Han, Yuqian Dong, Xiaopei Yang, Shuqing Song, Luqing Qiu, Wen Zheng, Jianwen Xu, Tianqi Huang, Zhimin Wang, Dong Lan, Xinsheng Tan, Yang Yu · Applied Physics Letters · 2021
Shortcuts to adiabaticity have been proved an effective routine for precise quantum state manipulation. Here, we experimentally demonstrate invariant-based shortcuts to adiabaticity to speed up the population transfer in a superconducting circuit. Through inverse engineering of the Hamiltonian, we realize this protocol in a single-qubit and a two-qubit system. The Lewis–Risenfeld phase is characterized experimentally. Furthermore, we investigate the robustness of the scheme against amplitude and frequency errors.