Efficient entanglement criteria beyond Gaussian limits using Gaussian measurements. Academic Article uri icon

abstract

  • We present a formalism to derive entanglement criteria beyond the Gaussian regime that can be readily tested by only homodyne detection. The measured observable is the Einstein-Podolsky-Rosen (EPR) correlation. Its arbitrary functional form enables us to detect non-Gaussian entanglement even when an entanglement test based on second-order moments fails. We illustrate the power of our experimentally friendly criteria for a broad class of non-Gaussian states under realistic conditions. We also show rigorously that quantum teleportation for continuous variables employs a specific functional form of EPR correlation.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Nha, H., Lee, S., Ji, S., & Kim, M. S

citation count

  • 29

complete list of authors

  • Nha, Hyunchul||Lee, Su-Yong||Ji, Se-Wan||Kim, MS

publication date

  • January 2012