Xu Kebiao, Xie Tianyu, Li Zhaokai, Xu Xiangkun, Wang Mengqi, Ye Xiangyu, Kong Fei, Geng Jianpei, Duan Changkui, Shi Fazhan, Du Jiangfeng
CAS Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.
Phys Rev Lett. 2017 Mar 31;118(13):130504. doi: 10.1103/PhysRevLett.118.130504. Epub 2017 Mar 30.
The adiabatic quantum computation is a universal and robust method of quantum computing. In this architecture, the problem can be solved by adiabatically evolving the quantum processor from the ground state of a simple initial Hamiltonian to that of a final one, which encodes the solution of the problem. Adiabatic quantum computation has been proved to be a compatible candidate for scalable quantum computation. In this Letter, we report on the experimental realization of an adiabatic quantum algorithm on a single solid spin system under ambient conditions. All elements of adiabatic quantum computation, including initial state preparation, adiabatic evolution (simulated by optimal control), and final state read-out, are realized experimentally. As an example, we found the ground state of the problem Hamiltonian S_{z}I_{z} on our adiabatic quantum processor, which can be mapped to the factorization of 35 into its prime factors 5 and 7.
绝热量子计算是一种通用且稳健的量子计算方法。在这种架构中，问题可通过将量子处理器从一个简单初始哈密顿量的基态绝热演化至最终哈密顿量的基态来解决，最终哈密顿量编码了问题的解。绝热量子计算已被证明是可扩展量子计算的一个合适候选方案。在本信函中，我们报告了在环境条件下单个固体自旋系统上绝热量子算法实验实现的情况。绝热量子计算的所有要素，包括初始态制备、绝热演化（通过最优控制模拟）以及终态读出，均通过实验得以实现。例如，我们在绝热量子处理器上找到了问题哈密顿量(S_{z}I_{z})的基态，该基态可映射为将35分解为其质因数5和7。
