Quantum cryptography: No Signaling and quantum key distribution

Jul 05, 2005

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.

Related link: Perimeter Institute for Theoretical Physics

Explore further: A nanosized hydrogen generator

add to favorites email to friend print save as pdf

Related Stories

Long lost Roman fort discovered in Gernsheim

28 minutes ago

In the course of an educational dig in Gernsheim in the Hessian Ried, archaeologists from Frankfurt University have discovered a long lost Roman fort: A troop unit made up out of approximately 500 soldiers ...

Carbon injection initiative supported by new research

48 minutes ago

Worldwide attempts to tackle global warming by injecting carbon dioxide into underground volcanic rock have been informed by new research that shows the process happens naturally on a massive scale over millions ...

Tandem microwave destroys hazmat, disinfects

48 minutes ago

Dangerous materials can be destroyed, bacteria spores can be disinfected, and information can be collected that reveals the country of origin of radiological isotopes - all of this due to a commercial microwave ...

Recommended for you

A nanosized hydrogen generator

23 hours ago

(Phys.org) —Researchers at the US Department of Energy's (DOE) Argonne National Laboratory have created a small scale "hydrogen generator" that uses light and a two-dimensional graphene platform to boost ...

User comments : 0