Quantum teleportation approaches the computer chip | Matter & Energy | Science News

Quantum teleportation approaches the computer chip | Matter & Energy | Science News; Now physicist Andreas Wallraff at ETH Zurich and his team have created the first solid-state device, similar to a computer chip, that is capable of teleporting quantum information. The chip contains tiny circuits that each behave like an atom. The circuits are connected by millimeters-long transmission lines carrying microwave radiation, which entangles the circuits so that the properties of one affect the other. By programming a bit of quantum information into circuit A, Wallraff and his team changed the signal arriving at circuit B. They could then use that changed signal to determine the original properties of circuit A and transfer them to circuit B.

Most importantly, Wallraff’s teleportation system successfully transports information in nearly every attempt, and it can do it roughly 10,000 times per second, an unprecedented rate.

Math Advances Raise the Prospect of an Internet Security Crisis | MIT Technology Review

Math Advances Raise the Prospect of an Internet Security Crisis | MIT Technology Review: “Our conclusion is there is a small but definite chance that RSA and classic Diffie-Hellman will not be usable for encryption purposes in four to five years..."

 ...it is possible that algorithms able to solve the discrete logarithm problem quickly could exist...

...French academic Antoine Joux published two papers that suggest such an algorithm could be found before long...

A memristor true random-number generator

A memristor true random-number generator: ...However, with the CRRAM design, the memory cell conducts over a small area, so current flowing through it is especially sensitive to the capture and release of electrons that get temporarily trapped in the silicon dioxide film. This trapping and releasing is the random event that the new device relies on to produce random numbers.
“The natural fluctuation can’t be predicted..."

Neutrinos send wireless message through the Earth

Neutrinos send wireless message through the Earth: The researchers used Fermilab's Neutrinos at the Main Injector (NuMI) beam to fire pulses containing trillions of neutrinos at the MINERvA detector, which is underground so as to shield it from cosmic rays, charged particles that rain down on Earth from space. The team encoded the word "neutrino" using a standard binary communications code that turns letters into strings of zeros and ones. These binary digits were transmitted using the presence of a pulse to stand for "1" and the absence to stand for "0".

The one-word message consisted of 25 pulses separated by a space of just over two seconds and was repeated around 3500 times over a span of 142 minutes, with an average of just 0.81 neutrinos detected for each pulse. That corresponds to a transmission rate of 0.1 bits per second, with an error rate of 1 per cent.

Blog - Encrypting Pictures Using Chaotic Cellular Automata

Blog - Encrypting Pictures Using Chaotic Cellular Automata: Start by entering the password to produce a starting pattern of cells in the cellular automaton. Then run through 20 million iterations to generate a pseudorandom output. Superimpose this on the picture you want to encrypt and then send it.