Experimental quantum channel simulation

Date: 2017-04-10
Authors He Lu, Chang Liu, Dong-Sheng Wang, Luo-Kan Chen, Zheng-Da Li, Xing-Can Yao, Li Li, Nai-Le Liu, Cheng-Zhi Peng, Barry C. Sanders, Yu-Ao Chen, and Jian-Wei Pan
Journal No. Phys. Rev. A 95, 042310 (2017)
Abstract Quantum simulation is of great importance in quantum information science. Here, we report an experimental quantum channel simulator imbued with an algorithm for imitating the behavior of a general class of quantum systems. The reported quantum channel simulator consists of four single-qubit gates and one controlled-not gate. All types of quantum channels can be decomposed by the algorithm and implemented on this device. We deploy our system to simulate various quantum channels, such as quantum-noise channels and weak quantum measurement. Our results advance experimental quantum channel simulation, which is integral to the goal of quantum information processing.