潘建伟与陈增兵教授研究组在NATURE PHOTONICS上发表题为Experimental measurement-based quantum ...的论文
时间:2011-03-14 01:42:00 来源:合肥微尺度物质科学国家实验室|http://www.hfnl.ustc.edu.cn
2011年2月,我室量子物理与量子信息研究部潘建伟教授与陈增兵教授研究组在NATURE PHOTONICS上发表题为Experimental measurement-based quantum computing beyond the cluster-state model的论文。
Source: NATURE PHOTONICS Volume: 5 Issue: 2 Pages: 117-123 Published: FEB 2011
Gao WB (Gao, Wei-Bo)1,2, Yao XC (Yao, Xing-Can)1,2, Cai JM (Cai, Jian-Ming)3,4, Lu H (Lu, He)1,2, Xu P (Xu, Ping)1,2, Yang T (Yang, Tao)1,2, Lu CY (Lu, Chao-Yang)1,2, Chen YA (Chen, Yu-Ao)1,2, Chen ZB (Chen, Zeng-Bing)1,2, Pan JW (Pan, Jian-Wei)1,2,5
Addresses:
1. Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui Peoples R China
2. Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui Peoples R China
3. Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria
4. Innsbruck Univ, Inst Theoret Phys, A-6020 Innsbruck, Austria
5. Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany
E-mail Addresses: zbchen@ustc.edu.cn, pan@ustc.edu.cn
Reprint Address: Chen, ZB (reprint author), Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui Peoples R China
Abstract:
The paradigm of measurement-based quantum computation opens new experimental avenues to realizing a quantum computer, and also deepens our understanding of quantum physics. Measurement-based quantum computation originates with a highly entangled universal resource state. For years, clusters states have been the only known universal resources. Surprisingly, a novel framework, namely quantum computation in correlation space, has opened a new route to implementing measurement-based quantum computation based on quantum states having entanglement properties, which differ from cluster states. Here, we report an experimental demonstration of every building block of such a model. With four-qubit and six-qubit states, which are not in the cluster-state category, we have realized a universal set of single-qubit rotations, two-qubit entangling gates and also Deutsch's algorithm. As well as being of fundamental interest, our experiment proves, in principle, the feasibility of universal measurement-based quantum computation without the use of cluster states, which represents a new approach towards the realization of a quantum computer.