Experimental realization of stimulated Raman superadiabatic passage with cold atoms

Yan-Xiong Du, Zhen-Tao Liang, Yi-Chao Li, Xian-Xian Yue, Qing-Xian Lv, Wei Huang, Xi Chen, Hui Yan, Shi-Liang Zhu

Published 2016-01-22Version 1

Accurately controlling a quantum system is a fundamental requirement in many areas of modern science ranging from quantum information processing to high-precision measurements. The ultimate goal in quantum control is to prepare a desired state as fast as possible with sufficient high-fidelity allowed by available resources and the experimental constraints. Stimulated Raman adiabatic passage (STIRAP) is a robust way for high-fidelity state transfer with the requirement of sufficiently long operation time for the adiabatic evolution. We here theoretically propose and then experimentally demonstrate a transitionless superadiabatic protocol to speed up the STIRAP. Through simply modifying the shapes of the Raman pulses, a fast and high-fidelity Stimulated Raman superadiabatic passage is experimentally realized, which is robust against control parameter variations. The all-optical, robust, and fast protocol demonstrated here provides an efficient and practical way to control the quantum systems.