Computer Science News

Researchers Invent New Architecture for Quantum Computing

Schematic view of a large-scale quantum processor based upon phosphorus (31P) donors in silicon, operated and coupled through the use of an induced electric dipole. Idle qubits have electrons at the interface, leaving the 31P nucleus in the ultra-coherent ionized state. Electrons are partially shifted toward the donor for quantum operations. The sketch shows a possible architecture where a cluster of qubits is locally coupled via the electric dipole, and a subgroup thereof is further coupled to another cluster through interaction with a shared microwave cavity (aqua). Image credit: Guilherme Tosi, University of New South Wales.
Sep 7, 2017 by News Staff

A new architecture, based on so-called ‘flip-flop’ qubits, allows for a silicon quantum processor that can be scaled up without the precise placement of atoms required in other approaches. Importantly, it allows qubits to be placed hundreds of nanometers (nm) apart and still remain coupled. Schematic view of a large-scale quantum processor based upon phosphorus (31P) donors in silicon, operated and coupled through the use of an induced electric...

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Scheme of a waveguide-integrated plasmonic nanoantenna for mode-selective polarization (de)multiplexing. The device couples light of orthogonal polarizations into different directions and modes of the underlying silicon waveguide. Image credit: Guo et al, doi: 10.1126/sciadv.1700007.

Optical Nanoantenna Promises Ultra-Fast Graphics on Gaming Consoles, PCs

Jul 20, 2017 by News Staff

A group of researchers from the Australian National University (ANU) and elsewhere has designed a nanoantenna — a device which is 100 times thinner...

The battery-free phone can sense speech, actuate the earphones, and switch between uplink and downlink communications, all in real time. It is powered by either ambient radio signals or light. Image credit: Mark Stone, University of Washington.

First Battery-Free Cellphone Harvests Power from Ambient Radio Signals, Light

Jul 14, 2017 by News Staff

A team of computer scientists and electrical engineers at the University of Washington has invented a cellphone that requires no batteries and harvests...

Example applications for on-body communication using the fingerprint sensors on smartphones. The smartphone can securely send information to doorknobs or glucose sensors over the body. Image credit: Vikram Iyer / University of Washington.

Scientists Find Way to Send Passwords via Human Body

Oct 3, 2016 by News Staff

A new technique devised by a team of researchers at the University of Washington leverages the signals already generated by fingerprint sensors on smartphones...

Turing test: one judge-two hidden interlocutors. Image credit: Kevin Warwick & Huma Shah, Coventry University / Christopher Chapman, University of Reading.

New Study Exposes Major Flaw in Turing Test

Jul 5, 2016 by News Staff

A serious problem in the Turing test — a test posited by the famed British mathematician and computer scientist Alan Turing which, if passed, would...

Standard interpretation of the Turing Test: player C, the interrogator, is tasked with trying to determine which player - A or B - is a computer and which is a human. Image credit: Hugo Férée / CC BY-SA 3.0.

Supercomputer Program Passes Turing Test Posing as 13-Year-Old Ukrainian Boy

Jun 10, 2014 by News Staff

A supercomputer program dubbed ‘Eugene Goostman’ has passed the iconic Turing Test by fooling human judges into thinking they were talking to a 13-year-old...

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