quantum mechanics

All-fibre Quantum Logic Demonstrated

harminka — Thu, 28 May 2009 11:33:58 -0500

A team of physicists and engineers have demonstrated all-fibre quantum logic, where single photons are generated and used to perform the contolled-NOT quantum logic gate in optical fibres with high fidelity. The only quantum technology in practical use today is quantum cryptography and is currently limited in the distance over which secure communication may occur.

Quantum ghosts are helpful

harminka — Mon, 27 Apr 2009 10:46:59 -0500

The idea that far distant particles can somehow 'talk' to each other worried Einstein so much that he called it 'spooky action at a distance'.

University of Toronto physicists resolve paradox of quantum theory

harminka — Thu, 15 Jan 2009 02:43:10 -0600

University of Toronto quantum physicists Jeff Lundeen and Aephraim Steinberg have shown that Hardy's paradox, a proposal that has confounded physicists for over a decade, can be confirmed and ultimately resolved, a task which had seemingly been impossible to perform.

Researchers measure elusive repulsive force from quantum fluctuations

harminka — Wed, 07 Jan 2009 13:06:01 -0600

Researchers from Harvard University and the National Institutes of Health (NIH) have measured, for the first time, a repulsive quantum mechanical force that could be harnessed and tailored for a wide range of new nanotechnology applications.

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

harminka — Mon, 22 Dec 2008 13:34:57 -0600

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.

Scientists discover quantum mechanical hurricanes form spontaneously

harminka — Thu, 16 Oct 2008 00:04:46 -0500

University of Arizona scientists experimenting with some of the coldest gases in the universe have discovered that when atoms in the gas get cold enough, they can spontaneously spin up into what might be described as quantum mechanical twisters or hurricanes.

Making waves

harminka — Fri, 10 Oct 2008 01:41:32 -0500

In a seminar co-organized by Stanford University and the American Institute of Mathematics, Soundararajan announced that he and Roman Holowinsky have proven a significant version of the quantum unique ergodicity (QUE) conjecture.

Quantum chaos unveiled?

harminka — Thu, 07 Aug 2008 11:57:51 -0500

A University of Utah study is shedding light on an important, unsolved physics problem: the relationship between chaos theory – which is based on 300-year-old Newtonian physics – and the modern theory of quantum mechanics.

UCSB researchers make milestone discovery in quantum mechanics

harminka — Wed, 06 Aug 2008 08:10:29 -0500

Researchers at UC Santa Barbara have recently reached what they are calling a milestone in experimental quantum mechanics.

Enrique Solano disentangles strange behavior of qubits

harminka — Mon, 28 Jul 2008 08:14:40 -0500

Current technology enables the building of electrical circuits similar to those we use at home but reduced thousands of times in size to a micrometric scale of thousandths of a millimetre. When these circuits are built of superconductor materials and at near-absolute zero cryogenic temperatures, the world of everyday physics is left behind and the amazing world of quantum physics is entered.

Europe gets together to harness quantum physics

harminka — Thu, 05 Jun 2008 10:33:08 -0500

The long cherished goal of applying the strange properties of quantum mechanics to the macroscopic world we inhabit has been brought closer by a series of recent developments.

EUROCORES conference gives cold quantum matter a European twist

harminka — Mon, 05 May 2008 14:18:59 -0500

Quantum matter has long fascinated the science community as many completely new physical phenomena have emerged from this field. Cold quantum matter can be used for applications such as high-precision clocks, which may run only one second behind per three million years! The interest in quantum matter is now spreading to other areas, and new phases of matter are emerging in molecular systems and plasmas.