关键词: 核磁共振/
量子计算/
量子模拟/
量子云
English Abstract
New research progress of nuclear magnetic resonance quantum information processing
Kong Xiang-Yu1,Zhu Yuan-Ye1,
Wen Jing-Wei1,
Xin Tao1,
Li Ke-Ren1,
Long Gui-Lu1,2
1.State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China;
2.Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
Fund Project:Project supported by the Natioanl Basic Research Program of China (Grant No. 2011CB9216002), the National High Technology Research and Development Program of China (Grant No. 2017YFA0303700), and the National Natural Science Foundation of China (Grant Nos. 91221205, 11774197, 61727801).Received Date:20 April 2018
Accepted Date:24 May 2018
Published Online:20 November 2019
Abstract:In the last 20 years, there have been lots of novel developments and remarkable achievements in quantum information processing theoretically and experimentally. Among them, the coherent control of nuclear spin dynamics is a powerful tool for the experimental implementation of quantum schemes in liquid and solid nuclear magnetic resonance (NMR) system, especially in liquid-state NMR. Compared with other quantum information processing systems, NMR platform has many advantages such as the long coherence time, the precise manipulation and well-developed quantum control techniques, which make it possible to accurately control a quantum system with up to 12-qubits. Extensive applications of liquid-state NMR spectroscopy in quantum information processing such as quantum communication, quantum computing and quantum simulation have been thoroughly studied over half a century. There are also many outstanding researches in the recent several years. So we focus on the recent researches in this review article. First, we introduce the basic principle of the liquid-state NMR quantum computing and two new methods reported in the pseudo-pure state preparation which has more advantages than the traditional methods. The quantum noise-injection methods and the quantum tomography technology in liquid-state NMR are also mentioned. Then we overview Horrow-Hassidim-Lioyd algorithm, quantum support vector machine algorithm, duality quantum computing and their implementations in liquid-state NMR system. Also, we report recent researches about quantum simulations, including quantum tunneling, high-energy physics and topological sequences. Then we display the quantum cloud platform of our group. In order to let more people, either amateurs or professionals, embrace and more importantly participate in the tidal wave of quantum science, we launch our NMR quantum cloud computing (NMRCloudQ) service. Through NMRCloudQ, we offer a direct access to a real, physical spectrometer in our laboratory and encourage users to explore quantum phenomena and demonstrate quantum algorithms. Finally, we discuss the development prospects and development bottlenecks of NMR, and point out the prospects for the future development direction.
Keywords: nuclear magnetic resonance/
quantum computing/
quantum simulation/
nuclear magnetic resonance quantum cloud computing
