Concurrence Measurement for the Two-Qubit Optical and Atomic States
College of Mathematics & Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Key Lab of Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications, Ministry of Education, Nanjing 210003, China
Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Author to whom correspondence should be addressed.
Academic Editor: Jay Lawrence
Received: 27 March 2015 / Revised: 9 June 2015 / Accepted: 16 June 2015 / Published: 19 June 2015
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Concurrence provides us an effective approach to quantify entanglement, which is quite important in quantum information processing applications. In the paper, we mainly review some direct concurrence measurement protocols of the two-qubit optical or atomic system. We first introduce the concept of concurrence for a two-qubit system. Second, we explain the approaches of the concurrence measurement in both a linear and a nonlinear optical system. Third, we introduce some protocols for measuring the concurrence of the atomic entanglement system.
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MDPI and ACS Style
Zhou, L.; Sheng, Y.-B. Concurrence Measurement for the Two-Qubit Optical and Atomic States. Entropy 2015, 17, 4293-4322.
Zhou L, Sheng Y-B. Concurrence Measurement for the Two-Qubit Optical and Atomic States. Entropy. 2015; 17(6):4293-4322.
Zhou, Lan; Sheng, Yu-Bo. 2015. "Concurrence Measurement for the Two-Qubit Optical and Atomic States." Entropy 17, no. 6: 4293-4322.
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