Quantum cryptography
A new research article outlines another aspect of Quantum Cryptography
In “No Signaling and quantum key distribution”, a new paper published in Physical Review Letters 95 (010503 – 2005), Barrett, Hardy and Kent give the first example of a way of implementing quantum cryptography which is provably secure – even if quantum theory is incorrect, so long as a successor theory shares with quantum theory the features which make faster-than-light signaling impossible. The scheme can be implemented by two parties (Alice and Bob) who know quantum theory but know nothing about the precise form of any successor theory, and is secure against a “post-quantum” eavesdropper, Eve, even if she knows the successor theory and has arbitrary post-quantum technology available to her.
Media Contact
More Information:
http://www.perimeterinstitute.caAll latest news from the category: Physics and Astronomy
This area deals with the fundamental laws and building blocks of nature and how they interact, the properties and the behavior of matter, and research into space and time and their structures.
innovations-report provides in-depth reports and articles on subjects such as astrophysics, laser technologies, nuclear, quantum, particle and solid-state physics, nanotechnologies, planetary research and findings (Mars, Venus) and developments related to the Hubble Telescope.
Newest articles
How marine worms regenerate lost body parts
The return of cells to a stem cell-like state as the key to regeneration. Many living organisms are able to regenerate damaged or lost tissue, but why some are particularly…
Nano-scale molecular detective
New on-chip device uses exotic light rays in 2D material to detect molecules. Researchers have developed a highly sensitive detector for identifying molecules via their infrared vibrational “fingerprint”. Published in Nature…
Novel CAR T-cell therapy
… demonstrates efficacy and safety in preclinical models of HER2-positive solid tumors. The p95HER2 protein is found expressed in one third of HER2+ tumors, which represent 4% of all tumors….