Quantum Test Found For Mathematical Undecidability: related news

Quantum Test Found For Mathematical Undecidability

KentuckyFC writes "Philosophers have long wondered at the profound link between mathematics and physics, but how deep does this connection go? Pretty deep according to the results of a quantum experiment exploring the nature of mathematical undecidability. Here's how: any logical system must be based on axioms, which are propositions that are defined to be true. A proposition is logically independent from these axioms if it can neither be proved nor disproved from them; mathematicians say it is undecidable. In the experiment, researchers encoded a set of axioms as quantum states. A particular measurement on this system can then be thought of as a proposition which, if undecidable, yields a random result — which is what they found. 'This sheds new light on the (mathematical) origin of quantum randomness in these measurements,' say the re

'Seeing' the quantum world

Quantum physics is both mysterious and difficult to grasp. Barry Sanders, director of the University of Calgary's Institute for Quantum Information Science, is hoping to change that. Sanders, who is also the iCORE Chair of Quantum Information Science, has produced a four-minute animated movie with a team of animators and scientists. The film is intended for funding agencies, the public, and interdisciplinary teams building quantum computers, so they can see how a quantum computer would work and its underlying science.

Dream of quantum computing closer to reality as mathematicians chase key breakthrough

The ability to exploit the extraordinary properties of quantum mechanics in novel applications, such as a new generation of super-fast computers, has come closer following recent progress with some of the remaining underlying mathematical problems. In particular, the operator theory used to describe interactions between particles at atomic scales or smaller where quantum mechanical properties are significant needs to be enhanced to deal with systems where digital information is processed or transmitted. In essence, the theory involves mathematical analysis based on Hilbert Spaces, which are extensions of the conventional three dimensional Euclidean geometry to cope with additional dimensions, as are required to describe quantum systems.

On the Front Foot: Lame duck means De Villiers' record run has gone south

An ill-advised sashay down the pitch, the ball spinning past the bat, the removal of the bails by the keeper and AB de Villiers' run, so to speak, was over. In his 46th Test and 78th innings, after making 2,958 runs, he had registered his first duck. No player had gone so long from the start of his Test career without being dismissed for nought. At Centurion on Thursday, Bangladesh, through the combination of Shakib Al Hasan and wicketkeeper Mushfiqur Rahim, did what all other eight Test nations had failed to do. The record for making most runs in a Test career without a single duck thus reverts to David Houghton of Zimbabwe, whose tally was 1,464 in 22 Tests and 36 innings. Houghton made one on three occasions. Five other players with 1,000 Test runs have gone through a Test career without a duck.

Test For Prostate Cancer Gene Soon To Be Available

Tiger4 writes "CNN reports on a simple test to determine the presence of genes linked to Prostate Cancer. These five genes, if present, can increase the risk of prostate cancer up to nine times. 'More than 25,000 American men will die from prostate cancer this year. But prostate cancer can be treated successfully if the disease is caught early. A blood test that can detect whether a man is at high risk for developing prostate cancer is on the horizon. The study was published in the February 28, 2008, issue of the New England Journal of Medicine.' It turns out the company actually wants to test saliva, making the test significantly easier and more convenient. Compare this to the tests available for BRCA, the so called Breast Cancer genes. Finding you have the gene can be devastating, but knowing well in advance of developing cancer allows

A Quantum Linear Equation Solver

joe writes "Aram Harrow and colleagues have just published on the arXiv a quantum algorithm for solving systems of linear equations (paper, PDF). Until now, the only quantum algorithms of practical consequence have been Shor's algorithm for prime factoring, and Feynman-inspired quantum simulation algorithms. All other algorithms either solve problems with no known practical applications, or produce only a polynomial speedup versus classical algorithms. Harrow et. al.'s algorithm provides an exponential speedup over the best-known classical algorithms. Since solving linear equations is such a common task in computational science and engineering, this algorithm makes many more important problems that currently use thousands of hours of CPU time on supercomputers amenable to significant quantum speedup.

BCCI shifts Ahmedabad cricket Test to Mohali

New Delhi/London: Following a request from the English cricket board, the Ahmedabad Test has been shifted to Mohali and it will be the second Test and not the first as originally scheduled. The Board of Control for Cricket in India (BCCI) has already shifted the Mumbai Test to Chennai after terror attacks in the western metropolis last week. The Chennai Test will start Dec 11 and Mohali will host the second from Dec 19.

'Seeing' The Quantum World: How A Quantum Computer Would Work

Quantum physics is both mysterious and difficult to grasp. Barry Sanders, director of the U of C’s Institute for Quantum Information Science, is hoping to change that.

Graeme Swann will wake up as a Test cricketer tomorrow having given up completely on his dream of playing Test cricket for England following a fall-out with former coach Duncan Fletcher.

Graeme Swann will wake up as a Test cricketer tomorrow having given up completely on his dream of playing Test cricket for England following a fall-out with former coach Duncan Fletcher.

India/England series ends in a bore draw

EngindAfter the wonderful advertisement for Test cricket that was the Madras Test (and indeed the Perth Test this week), the second match between India and England that has just finished was a yawn-inducer. India were the only side who could win the Test at the start of the final day, given the likely poor evening light, but with a 1-0 lead already secured, MS Dhoni decided to let his batsmen have an extended net and the chance of hundreds rather than make the early declaration that could have sprung the Test into life.

CombiMatrix Launches New Prostate Cancer Array-Based Diagnostic Test: ProScan Array is First Genome-Based Test to Introduce Genomic Pathology to Prost

CombiMatrix Corporation (Nasdaq:CBMX) today announced the introduction of the first prostate cancer array-based test. Known as the ProScan(tm) test, it complements the company's growing portfolio of array-based diagnostic tests.

Quantum Computing Closer To Reality As Mathematicians Chase Key Breakthrough

The ability to exploit the extraordinary properties of quantum mechanics in novel applications, such as a new generation of super-fast computers, has come closer following recent progress with some of the remaining underlying mathematical problems. In particular, the operator theory used to describe interactions between particles at atomic scales or smaller where quantum mechanical properties are significant needs to be enhanced to deal with systems where digital information is processed or transmitted.

The Linux Test Project NOV 2008 Release Announcement

The Linux Test Project test suite has been released for the month of NOV 2008. The latest version of the test-suite contains 3000+ tests for the Linux OS.

First Test ends in a draw

DUNEDIN, New Zealand -- The first Test match between West Indies and New Zealand at University Oval, Dunedin ended in a draw after there was no play on the final day, Monday, due to heavy rain. The match officials called off play at 2 pm (9 pm Eastern Caribbean Time/8 pm Jamaica Time). Jerome Taylor was named Man-of-the-Match for his brilliant 106 off 107 balls batting at Number 8 on Sunday. It was his maiden century in first-class cricket and Test cricket. The second and final Test is at McLean Park in Napier and starts on Friday.

Flynn denied maiden test century

DANIEL Flynn made his highest test score yesterday on the first day of the first test between New Zealand and the West Indies before becoming the victim of test cricket's new video review rules.

Cricket: Bangladesh face Sri Lanka in first test tomorrow

Cricket: Bangladesh face Sri Lanka in first test tomorrow DHAKA: The first Test of the Grameenphone Test Series will begin tomorrow with hosts Bangladesh taking on strong Sri Lanka at the Mirpur Sher-e-Bangla National Stadium (SBNS).

Scientists Extend the Lifetime of Quantum Memory

(PhysOrg.com) -- Storing and sending information using quantum phenomena is one of the hottest areas of research today; scientists across the globe are investigating how to make quantum communication possible for real-life applications. In a key step, a group of researchers was recently able to greatly improve the lifetime of a form of quantum memory.

Physicists Set New Record for Quantum Memory Storage

Physicists have taken a significant step toward creation of quantum networks by establishing a new record for the length of time that quantum information can be stored in and retrieved from an ensemble of very cold atoms. Though the information remains usable for just milliseconds, even that short lifetime should be enough to allow transmission of data from one quantum repeater to another on an optical network.

Physicists Set New Record For Quantum Memory Storage And Retrieval

Physicists have taken a significant step toward creation of quantum networks by establishing a new record for the length of time that quantum information can be stored in and retrieved from an ensemble of very cold atoms. Though the information remains usable for just milliseconds, even that short lifetime should be enough to allow transmission of data from one quantum repeater to another on an optical network.

For the first time, quantum bit snared, stored, and read

A team of scientists from the University of Heidelberg, Germany, the Technical University of Vienna, Austria, and the University of Science and Technology of China for the first time has succeeded in buffering a quantum bit during its transmission. The achievement could be used for the construction of quantum repeaters and perhaps, eventually, to build a memory for a quantum computer.

New Record for Information Storage and Retrieval Lifetime Advances Quantum Networks

Physicists have taken a significant step toward creation of quantum networks by establishing a new record for the length of time that quantum information can be stored in, and retrieved from, an ensemble of very cold atoms. Though the information remains usable for just milliseconds, even that short lifetime should be enough to allow transmission of data from one quantum repeater to another on an optical network. Full Story

English cricket team confident of leveling the two test series

Mohali, December 17 (ANI):English cricket team confident of leveling the two test series as the team practiced in heavily guarded stadium in northern Mohali on Wednesday ahead of the second test match. The second test match between India and England will be played on Friday.

Gayle looking to take positives into second Test

DUNEDIN, New Zealand -- Captain Chris Gayle said the West Indies will be looking to take the positives from the first Test into the second Test when they meet New Zealand in Napier on Friday. Gayle was speaking on Monday after the final day of the first Test was washed out as the match ended in a draw.

Using Aspects to Unit-Test the Integration of Third-Party Components

Unit testing is hard. There I said it. Although I have been developing software for the past 18 years I still find that putting my applications through their paces via unit testing is difficult. I have learned the lesson (I'm sure like many of you) the hard way. Unit testing is probably the most important part of software development. We all get caught in the trap once in a while when we believe that there is no need to test a piece of software we just wrote. We convince ourselves it is too hard to test, the rest of the application is solid, and that if there are any real errors in the code it will be discovered by the QA department. You know and I know this is a bad argument. Of course once the application is in production it is the piece of code that we didn't test that causes system failures.

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