Light may be the missing ingredient in making usable quantum silicon computer chips, according to an international study featuring a University of Queensland researcher.
The team has engineered a silicon chip that can guide single particles of light - photons - along optical tracks, encoding and processing quantum-bits of information known as 'qubits'.
Professor Timothy Ralph from UQ's Centre for Quantum Computation and Communication Technology said that the use of photons in this way could increase the number and types of tasks that computers can help us with.
"Current computers use a binary code - comprising ones and zeroes - to transfer information, but quantum computers have potential for greater power by harnessing the power of qubits," Professor Ralph said.
"Qubits can be one and zero at the same time, or can link in much more complicated ways - a process known as quantum entanglement - allowing us to process enormous amounts of data at once.
"The real trick is creating a quantum computing device that is reprogrammable and can be made at low cost."
The experiment, conducted primarily at the University of Bristol, proved that it is possible to fully control two qubits of information within a single integrated silicon chip.
"What this means is that we've effectively created a programmable machine that can accomplish a variety of tasks.
"And since it's a very small processor and can be built out of silicon, it might be able to be scaled in a cost-effective way," he said.
"It's still early days, but we've aimed to develop technology that is truly scalable, and since there's been so much research and investment in silicon chips, this innovation might be found in the laptops and smartphones of the future."
A surprising result of the experiment is that the quantum computing machine has become a research tool in its own right.
"The device has now been used to implement several different quantum information experiments using almost 100,000 different reprogrammed settings," Professor Ralph said.
"This is just the beginning; we're just starting to see what kind of exponential change this might lead to."
Professor Timothy Ralph | EurekAlert!
Researchers build transistor-like gate for quantum information processing -- with qudits
17.07.2019 | Purdue University
New DFG Research Group "Metrology for THz Communications"
17.07.2019 | Technische Universität Braunschweig
Scientists at the University Würzburg and University Hospital of Würzburg found that megakaryocytes act as “bouncers” and thus modulate bone marrow niche properties and cell migration dynamics. The study was published in July in the Journal “Haematologica”.
Hematopoiesis is the process of forming blood cells, which occurs predominantly in the bone marrow. The bone marrow produces all types of blood cells: red...
For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University in the United States has now successfully deployed artificial neural networks for image analysis of quantum systems.
Is that a dog or a cat? Such a classification is a prime example of machine learning: artificial neural networks can be trained to analyze images by looking...
An international research group led by scientists from the University of Bayreuth has produced a previously unknown material: Rhenium nitride pernitride. Thanks to combining properties that were previously considered incompatible, it looks set to become highly attractive for technological applications. Indeed, it is a super-hard metallic conductor that can withstand extremely high pressures like a diamond. A process now developed in Bayreuth opens up the possibility of producing rhenium nitride pernitride and other technologically interesting materials in sufficiently large quantity for their properties characterisation. The new findings are presented in "Nature Communications".
The possibility of finding a compound that was metallically conductive, super-hard, and ultra-incompressible was long considered unlikely in science. It was...
An interdisciplinary research team at the Technical University of Munich (TUM) has built platinum nanoparticles for catalysis in fuel cells: The new size-optimized catalysts are twice as good as the best process commercially available today.
Fuel cells may well replace batteries as the power source for electric cars. They consume hydrogen, a gas which could be produced for example using surplus...
The fly agaric with its red hat is perhaps the most evocative of the diverse and variously colored mushroom species. Hitherto, the purpose of these colors was...
24.06.2019 | Event News
29.04.2019 | Event News
17.04.2019 | Event News
17.07.2019 | Earth Sciences
17.07.2019 | Information Technology
17.07.2019 | Materials Sciences