Submitted by JMiszczak on Fri, 13/05/2011 - 21:39.
Hamish Johnston writes at PhysicsWorld: ''A small firm based in Canada that aims to build a commercially viable quantum computer has shown that an important part of its technology works. D-Wave Systems, which was spun-out of the University of British Columbia in 1999, has shown that a technique called quantum annealing can be used to make eight coupled quantum bits – or qubits – find their ground state.
Submitted by JMiszczak on Wed, 04/05/2011 - 10:29.
Professor Immanuel Bloch, Director at the Max Planck Institute of Quantum Optics and Professor for experimental physics at the Ludwig-Maximilians-Universität Munich, has been elected by the EPS for the “2011 Prize for Fundamental Aspects of Quantum Electronics and Optics”. The award is given to him for his “pioneering work on exploring quantum many-body systems using ultracold quantum gases for quantum simulation and quantum information applications.”
Submitted by JMiszczak on Wed, 20/04/2011 - 18:51.
ID Quantique SA announced the successful completion of the longest running project for testing Quantum Key Distribution (QKD) in a field environment. The main goal of the SwissQuantum network, installed in the Geneva metropolitan area in March 2009, was to validate the reliability and robustness of QKD in continuous operation over a long time period in a field environment. The quantum layer ran stably for nearly 2 years until the completion of the project in January 2011, confirming the viability of QKD as a commercial encryption technology.
Submitted by JMiszczak on Thu, 07/04/2011 - 10:51.
John Matson at his Scientific American blog write: ''Quantum information science is a bit like classroom management—the larger the group, the harder it is to keep everything together. But to build a practical quantum computer physicists will need many particles working in synchrony as quantum bits, or quibits. <!--break-->Each qubit can be a 0 and a 1 simultaneously, vaulting the number-crunching power of a hypothetical quantum computer well past that of ordinary computers.
The most accurate quantum measurements possible are made using an interferometer, which exploits the wave nature of matter and light. In this method, two identical beams of particles are sent along different paths to a detector, with one interacting with an object of interest along the way. Recombining the beams afterwards creates an interference pattern that reflects how much the interacting beam was disturbed -providing details about the object's properties.
Scientists of the Institute for Quantum Optics and Quantum Information (IQOQI) in Innsbruck, Austria, have reached a milestone in the exploration of quantum gas mixtures. In an international first, the research group led by Rudolf Grimm and Florian Schreck has succeeded in producing controlled strong interactions between two fermionic elements -lithium-6 and potassium-40. This model system not only promises to provide new insights into solid-state physics but also shows intriguing analogies to the primordial substance right after the Big Bang.
Submitted by JMiszczak on Mon, 21/03/2011 - 09:02.
Physicists around the world are searching for the best way to realize a quantum computer. Now scientists of the team around Stefan Kuhr and Immanuel Bloch at the Max Planck Institute of Quantum Optics (Garching/Munich) took a decisive step in this direction. They could address and change the spin of single atoms with laser light and arrange them in arbitrary patterns. In this way, the physicists strung the atoms along a line and could directly observe their tunnelling dynamics in a "racing duel" of the atoms.
Submitted by JMiszczak on Fri, 11/03/2011 - 18:11.
Researchers at the University of Vienna in Austria and the Technische Universität München in Germany have reported their findings, which will solve a long-standing problem in the design of micro- and nanoelectromechanical resonators, in the journal Nature Communications. The research team developed a finite-element-based numerical solver capable of predicting the design-limited damping of almost arbitrary mechanical resonators to resolve this problem.