Nonclassicality and entanglement for continuous-variable quantum information

Hyunchul Nha, Jaehak Lee, Jiyong Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationQuantum and Nonlinear Optics V
EditorsByoung S. Ham, Qihuang Gong, Guang-Can Guo
ISBN (Electronic)9781510622487
Publication statusPublished - 1 Jan 2018
EventQuantum and Nonlinear Optics V 2018 - Beijing, China
Duration: 11 Oct 201813 Oct 2018


OtherQuantum and Nonlinear Optics V 2018



  • homodyne detections
  • nonclassicality
  • quantum entanglement
  • quantum non-Gaussianity
  • quantum steering
  • uncertainty relations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Nha, H., Lee, J., & Park, J. (2018). Nonclassicality and entanglement for continuous-variable quantum information. In B. S. Ham, Q. Gong, & G-C. Guo (Eds.), Quantum and Nonlinear Optics V (Vol. 10825). [108250F] SPIE.