Tag Archive for 'Quantum computer'

An artist’s impression of an accretion disk around a black hole. Image credit: XMM-Newton / ESA / NASA.

X-Rays from Accretion Disks around Rotating Black Holes Can Act as Carriers of Quantum Information

Nov 17, 2017 by News Staff

In a paper published in the journal New Astronomy, theoretical physicist Ovidiu Racorean suggests that X-ray photons emitted by accretion disks around...

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.

Researchers Invent New Architecture for Quantum Computing

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...

Photo of the centimeter-sized silicon chip, which has two parallel superconducting oscillators and the quantum-circuit refrigerators connected to them. Image credit: Kuan Yen Tan / Aalto University.

Researchers Invent Nanoscale ‘Refrigerator’ for Quantum Computers

May 9, 2017 by News Staff

A team of researchers from the Department of Applied Physics at Aalto University in Finland has invented a quantum-circuit refrigerator, which can reduce...