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Proceedings Paper

Nonclassicality and entanglement for continuous-variable quantum information
Author(s): Hyunchul Nha; Jaehak Lee; Jiyong Park
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Paper Abstract

We present how nonclassicality and entanglement can be characterized and detected efficiently for continuous variable systems. Of particular interest is the use of homodyne detections to measure quadrature amplitudes at minimum level to confirm nonclassicality and entanglement beyond Gaussian states. We introduce a systematic method for a functional form of uncertainty relations, which can be efficiently employed to experimentally detect non-Gaussian states comprehensively. Our approach for quantum correlations unifies a framework for quantum entanglement and quantum steering, which include the known results for Gaussian states and provides a better tool for non-Gaussian states than existing methods, e.g. entropic uncertainty relations.

Paper Details

Date Published: 9 November 2018
PDF: 7 pages
Proc. SPIE 10825, Quantum and Nonlinear Optics V, 108250F (9 November 2018); doi: 10.1117/12.2500793
Show Author Affiliations
Hyunchul Nha, Texas A&M Univ. at Qatar (Qatar)
Jaehak Lee, Texas A&M Univ. at Qatar (Qatar)
Jiyong Park, Hanbat National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 10825:
Quantum and Nonlinear Optics V
Qihuang Gong; Guang-Can Guo; Byoung S. Ham, Editor(s)

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