Researchers have discovered a new way of emitting photons one at a time. They have constructed semiconductor nanowires with "quantum dots" of unprecedented quality - a discovery with implications for the future of quantum computing.
Two papers about minimising effort took CQT researchers to the prestigious ACM-SIAM SODA conference in New Orleans in January. The CQT computer scientists and their collaborators set bounds on the amount of work that needs to be done to solve two different problems.
A quantum computer doesn't need to be a single large device but could be built from a network of small parts, new research from the University of Bristol has demonstrated. As a result, building such a computer would ...
Quantum information processing promises not only breakthroughs for computing, communications and cryptography, but it can also help us devise tools for navigating and controlling the nano-scale world. Sensors that operate according to quantum mechanics may achieve sensitivity, selectivity, precision and robustness far beyond their classical counterparts.
The IQC team of Andrew Childs (Associate Professor of Combinatorics and Optimization), David Gosset (Post-Doctoral Fellow) and Zak Webb (PhD student) have proposed a new universal computational model. This model has the potential to become an architecture for a scalable quantum computer without the need to actively manipulate qubits during the computation. The team’s findings will be published in the February 15, 2013 issue of Science.
A team of physicists at the University of Innsbruck, Austria, performed an experiment that seems to contradict the foundations of quantum theory – at first glance. The team led by Rainer Blatt reversed a quantum measurement in a prototype quantum information processor. The experiment is enabled by a technique that has been developed for quantum error correction in a future quantum computer.
This work represents the first step towards creating exotic mechanical quantum states. For example, the transfer makes it possible to create a state in which the resonator simultaneously vibrates and doesn’t vibrate, says Mika Sillanpää, professor at Aalto University, who runs the research group.
University of Utah engineers demonstrated it is feasible to build the first organic materials that conduct electricity on their edges, but act as an insulator inside. These materials, called organic topological insulators, could shuttle information at the speed of light in quantum computers and other high-speed electronic devices.
A paper in the prestigious journal Science coauthored by University of Pittsburgh physicist Sergey Frolov has garnered him and his colleagues the 2012 Newcomb Cleveland Prize, an annual honor awarded to the author or authors of the best research article or report appearing in Science, which is published weekly by the American Association for the Advancement of Science (AAAS). The prize carries with it a cash award of $25,000.
A proof-of-concept device that could pave the way for on-chip optical quantum networks has been created by a group of researchers from the US.