Move to content body Move to content menus


  • home
  • sitemap
  • korean



Research Highlights

New Bell-measurement Scheme to Teleport Photons with High Success Probability

  • March 17, 2015
  • Hit 4737
    • facebook
    • twitter
    • print

Professor KIM Jin-Soo
Professor KIM Jin-Soo

Professor Hyunseok JEONG’s research team (Department of Physics and Astronomy) has developed a new Bell-measurement scheme to teleport photons with high success probability. Photons are a promising candidate for quantum information. But the standard Bell measurement using linear optics and photo detectors showed a success probability of 1/2, which fundamentally hindered deterministic quantum teleportation. The team came up with a novel Bell-measurement scheme using linear optics and photon on-off measurements with multiphoton qubit encoding in the form of the Greenberger-Horne-Zeilinger (GHZ) entanglement. Assuming that N is the number of photons in a logical qubit, this Bell measurement fails only when none of the N pairs is a detectable Bell state, resulting in a success probability of 1 − 2−N that rapidly approaches unity as N increases. Professor Jeong commented that this “reveals the possibility of using multipartite entangled systems for efficient quantum communication and computation.” This research was published online on March 18 in Physical Review Letters.

Summary by LEE Hee Un, SNU English Editor,
Proofread by Melora Brett Briana Johnson,

List of postings
154 New Bell-measurement Scheme to Teleport Photons with High Success Probability Mar. 17, 2015 4737
153 Why Targeted Cancer Therapy Seldom Works in Treating Ovarian Cancer Mar. 10, 2015 5469
152 Professor ZHANG Byoung-Tak Develops Imaginative Computer Program Feb. 25, 2015 9988
151 Professor KWON Sunghoon Develops DNA Laser Printer Feb. 24, 2015 7503
150 Professor KIM Jin-Soo’s RNA-Guided Genome Editing Using Digenome-seq Feb. 9, 2015 8749