Generation of a non-zero discord bipartite state with classical second-order interference

Yujun Choi; Kang Hee Hong; Hyang Tag Lim; Jiwon Yune; Osung Kwon; Sang Wook Han; Kyunghwan Oh; Yoon Ho Kim; Yong Su Kim; Sung Moon

doi:10.1364/OE.25.002540

Generation of a non-zero discord bipartite state with classical second-order interference

Yujun Choi, Kang Hee Hong, Hyang Tag Lim, Jiwon Yune, Osung Kwon, Sang Wook Han, Kyunghwan Oh, Yoon Ho Kim, Yong Su Kim, Sung Moon

Department of Physics

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

We report an investigation on quantum discord in classical second-order interference. In particular, we theoretically show that a bipartite state with D = 0.311 of discord can be generated via classical second-order interference. We also experimentally verify the theory by obtaining D = 0.197 ± 0.060 of non-zero discord state. Together with the fact that the nonclassicalities originated from physical constraints and information theoretic perspectives are not equivalent, this result provides an insight to understand the nature of quantum discord.

Original language	English
Pages (from-to)	2540-2551
Number of pages	12
Journal	Optics Express
Volume	25
Issue number	3
DOIs	https://doi.org/10.1364/OE.25.002540
Publication status	Published - 2017 Feb 6

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All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Choi, Y., Hong, K. H., Lim, H. T., Yune, J., Kwon, O., Han, S. W., Oh, K., Kim, Y. H., Kim, Y. S., & Moon, S. (2017). Generation of a non-zero discord bipartite state with classical second-order interference. Optics Express, 25(3), 2540-2551. https://doi.org/10.1364/OE.25.002540

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AU - Kwon, Osung

AU - Han, Sang Wook

AU - Oh, Kyunghwan

AU - Kim, Yoon Ho

AU - Kim, Yong Su

AU - Moon, Sung

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10.1364/OE.25.002540