Latest Quantum information science Stories
Chaotic behavior is the rule, not the exception, in the world we experience through our senses, the world governed by the laws of classical physics.Even tiny, easily overlooked events can completely change the behavior of a complex system, to the point where there is no apparent order to most natural systems we deal with in everyday life.The weather is one familiar case, but other well-studied examples can be found in chemical reactions, population dynamics, neural networks and even the stock...
Combining 6 photons together results in highly robust qubitsExploiting quantum mechanics for transmitting information is a tantalizing possibility because it promises secure, high speed communications. Unfortunately, the fragility of methods for storing and sending quantum information has so far frustrated the enterprise. Now a team of physicists in Sweden and Poland have shown that photons that encode data have strength in numbers. Their experiment is reported in Physical Review Letters and...
Physicists at UC Santa Barbara have made an important advance in quantum mechanics using a superconducting electrical circuit. The finding is reported in this week's issue of the journal Nature.The researchers showed that they could detect the quantum correlations in the results of measurements of entangled quantum bits, using a superconducting electrical circuit. The correlations are stronger than can be obtained using classical (non-quantum mechanical) physics, and according to the...
Diamonds, it has long been said, are a girl's best friend. But a research team including a physicist from the National Institute of Standards and Technology (NIST) has recently found* that the gems might turn out to be a patient's best friend as well.The team's work has the long-term goal of developing quantum computers, but it has borne fruit that may have more immediate application in medical science. Their finding that a candidate "quantum bit" has great sensitivity to magnetic...
NEW YORK, Sept. 8 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue. Quantum Cryptography http://www.reportlinker.com/p0131240/Quantum-Cryptography.html This report analyzes the Global Market for Quantum Cryptography in Millions of US$. Annual forecasts are provided for the period 2010 through 2015. The report profiles 15 companies including many key and niche players worldwide such as id Quantique SA, Cerberis, MagiQ Technologies,...
A new silicon chip the size of a penny uses photons to run Shor's algorithm - a well-known quantum approach - to solve mathematic problems, BBC News reported.Before the development, the algorithm required laboratory-sized optical computers to compute the two numbers that multiply together to form a given figure.Researchers say such factoring is the basis for a wide variety of encryption schemes and the new chip could easily be scaled up to handle more complex computing.Quantum computing...
 Scientists at UC Santa Barbara have devised a new type of superconducting circuit that behaves quantum mechanically "“"“ but has up to five levels of energy instead of the usual two. The findings are published in the August 7 issue of Science.These circuits act like artificial atoms in that they can only gain or lose energy in packets, or quanta, by jumping between discrete energy levels. "In our previous work, we focused on systems with just two energy levels, 'qubits,' because...
Raising prospects for building a practical quantum computer, physicists at the National Institute of Standards and Technology (NIST) have demonstrated sustained, reliable information processing operations on electrically charged atoms (ions). The new work, described in the August 6 issue of Science Express,* overcomes significant hurdles in scaling up ion-trapping technology from small demonstrations to larger quantum processors.In the new demonstration, NIST researchers repeatedly...
The first desktop computers changed the way we managed data forever. Three decades after their introduction, we rely on them to manage our time, social life and finances "” and to keep this information safe from prying eyes and online predators.So far, so good, despite an occasional breach. But our security and our data could be compromised overnight when the first quantum computer is built, says Dr. Julia Kempe of Tel Aviv University's Blavatnik School of Computer Science. These new...
Scientists at MIT have figured out a key step toward the design of quantum information networks. The results are reported in the July 20th issue of Physical Review Letters and highlighted in APS's on-line journal Physics (physics.aps.org).A quantum network "“ in which memory devices that store quantum states are interconnected with quantum information processing devices "“ is a prototype for designing a quantum internet. One path to making a quantum network is to map a light pulse onto...
