期刊论文

Wang XinWen

英文

中国科学：物理学、力学、天文学英文版

1674-7348

2014

57

10

1848-1853

10.1007/s11433-014-5549-3

National Basic Research Program of ChinaNational Basic Research Program of China [2013CB921804]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11004050, 11075050, 11375060]; Key Project of Chinese Ministry of EducationMinistry of Education, China [211119]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2013T60769]; construct program of the key discipline in Hunan province

本校为第一且通讯机构

We propose new methods to construct universal Greenberger-Horne-Zeilinger (GHZ)-state analyzers without destroying the qubits by using two-qubit parity gates. The idea can be applied to any physical systems where the two-qubit parity gate can be realized. We also investigate the feasibility of nondestructively distinguishing the GHZ-basis states for photonic qubits with such an idea. The nondestructive GHZ-state analyzers can act as generators of GHZ entangled states and are expected to find useful applications for resource-saving quantum information processi...