Category Technology/Electronics

A new and much faster quantum cryptography protocol has been developed: Usually, quantum cryptography is done with photons that can be in two different states. Using eight different states, cryptographic keys can be generated much faster and with much more robustness against interference.

Quantum cryptography is one of the most promising quantum technologies of our time: Exactly the same information is generated at two different locations, and the laws of quantum physics guarantee that no third party can intercept this information. This creates a code with which information can be perfectly encrypted.

The team of Prof...

Researchers at Chalmers University of Technology, Sweden, present a unique optical amplifier that is expected to revolutionise both space and fiber communication. The new amplifier offers high performance, is compact enough to integrate into a chip just millimeters in size, and – crucially – does not generate excess noise.

“This could be compared to switching from older, dial-up internet to modern broadband, with high speed and quality,” says Professor Peter Andrekson, Head of the Photonics Laboratory at the Department of Microtechnology and Nanoscience at Chalmers.

Optical c...

A new study demonstrating the emergence of localized magnetism due to a 2D nanomaterial’s unique, star-like atomic-scale structure has potential for applications in next-generation electronics based on organic nanomaterials, where tuning of electronic interactions can lead to a vast range of new electronic and magnetic phases.

A 2D nanomaterial consisting of organic molecules linked to metal atoms in a specific atomic-scale geometry shows non-trivial electronic and magnetic properties due to strong interactions between its electrons.

A new study, published today, shows the emergence...

New chip eliminates the need for specific decoding hardware, could boost efficiency of gaming systems, 5G networks, IoT, and more. Every piece of data that travels over the internet — from paragraphs in an email to 3D graphics in a virtual reality environment — can be altered by the noise it encounters along the way, such as electromagnetic interference from a microwave or Bluetooth device. The data are coded so that when they arrive at their destination, a decoding algorithm can undo the negative effects of that noise and retrieve the original data...