Experimental implementation of a continuous-time quantum random walk on a solid-state quantum information processor*

Project supported by the National Key Research and Development Program of China (Grant Nos. 2018YFA0306600 and 2016YFB0501603), the National Natural Science Foundation of China (Grant No. 11761131011), the Fund from the Chinese Academy of Sciences (Grant Nos. GJJSTD20170001, QYZDYSSWSLH004, and QYZDB-SSW-SLH005), the Anhui Initiative Fund in Quantum Information Technologies, China (Grant No. AHY050000), and the Youth Innovation Promotion Association of the Chinese Academy of Sciences.

Tusun Maimaitiyiming1, 2, 3, 4, Wu Yang1, 2, 3, Liu Wenquan1, 2, 3, Rong Xing1, 2, 3, †, Du Jiangfeng1, 2, 3, ‡
       

Schematic diagram of a four-node random walk and corresponding two different types of probabilities of time evolution. (a) The circle with four nodes. (b) The probabilities of a particle being at the node 0 over time t in the classical and quantum version of CTRW. The blue dashed line corresponds to the classical case, and red line corresponds to the quantum case.