Quantum cryptography can go the distance

Quantum cryptographic networks usually work by entangling two light particles, or photons. But individual photons can only travel so far down a fibre optic line before they are disrupted, says Yu-Ao Chen, a physicist at the University of Heidelberg in Germany. Although some experiments have managed to send entangled photons over distances of around 100 kilometres using bulky telescopes, networks based on commercial optic fibres have so far been limited to just a few kilometres in length. “It was impossible to go the distance,” Chen says.
Now Chen and his colleagues have found a way to extend the entangled photons’ reach1. Instead of photons, communication begins with two clouds of rubidium atoms: one by the sender and the other acting as a staging post on the way to the receiver. Stimulating these atoms makes them each release a photon, which remains entangled with its parent cloud.

Source: Nature.

63 thoughts on “Quantum cryptography can go the distance

  1. Pingback: centument
  2. Pingback: economics tuition
  3. Pingback: office lease miami
  4. Pingback: garcinia cambogia
  5. Pingback: economics tuition
  6. Pingback: economics tuition
  7. Pingback: malatya siksin
  8. Pingback: codine
  9. Pingback: Best in the World
  10. Pingback: sattamatka
  11. Pingback: angara fahise
  12. Pingback: bursa orospu
  13. Pingback: blogspot.com
  14. Pingback: subway game
  15. Pingback: Health
  16. Pingback: Divx Download
  17. Pingback: Live draw hongkong
  18. Pingback: play online matka
  19. Pingback: buy ghrp-2
  20. Pingback: satta matka
  21. Pingback: Agen Bandarq
  22. Pingback: yandex ankara
  23. Pingback: Tatuaggi imola
  24. Pingback: economics tuition
  25. Pingback: ICQ Chat
  26. Pingback: yandex ankara
  27. Pingback: yandex ankara
  28. Pingback: yandex ankara
  29. Pingback: anadrol pills
  30. Pingback: testo non 10 540
  31. Pingback: oxandrolon
  32. Pingback: 카지노사이트
  33. Pingback: °
  34. Pingback: web design agency
  35. Pingback: noosa electrician
  36. Pingback: GVK Biosciences

Comments are closed.