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Latest Quantum information science Stories

Black Holes: Getting Around The Firewall Paradox
2013-03-07 04:37:54

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Black holes are incredibly difficult objects to understand, partially because their very existence seemingly challenges the physical laws of the Universe. Because of their extreme nature, various peculiarities arise that give scientists pause. One such case was proposed by Stephen Hawking, the famed cosmologist, back in the 1970s. He noted that because of the extreme gravity that exists within the event horizon of a...

2013-03-04 13:22:04

Physicists make first direct measurements of polarization states of light Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both overcomes some important challenges of Heisenberg's famous Uncertainty Principle and also is applicable to qubits, the building blocks of quantum information theory. They report their results in a paper published...

Researchers Believe Quantum Satellites Will Be The Next Space Race
2013-03-01 20:16:16

Lee Rannals for redOrbit.com — Your Universe Online Two researchers from the University of Waterloo, Canada say the next big space race is building the first global quantum-communication satellite network. Up until now, the furthest quantum-communication signals have traveled is just a few hundred miles. However, this technology is up-and-coming, and is what Thomas Jennewein and Brendon Higgins believe will be driving the next space race. Quantum communication is the science...

2013-02-25 13:45:45

The team implemented the 'phase estimation algorithm' – a central quantum algorithm which achieves an exponential speedup over all classical algorithms. It lies at the heart of quantum computing and is a key sub-routine of many other important quantum algorithms, such as Shor's factoring algorithm and quantum simulations. Dr Xiao-Qi Zhou, who led the project, said: "Before our experiment, there had been several demonstrations of quantum algorithms, however, none of them implemented...

Playing Quantum Tricks By Reversing Measurements
2013-02-15 14:02:48

University of Innsbruck 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. Measurements on quantum systems have puzzled generations of...

2013-02-08 11:48:41

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. Presenting the device today, 8 February, in the Institute of Physics and German Physical Society's New Journal of Physics, it has been described as the "building block of future quantum networks." In an optical quantum network, information is carried between points by photons — the basic unit of light. There is a huge potential for this...

Transporting At The Speed Of Light Into The Quantum Internet
2013-02-04 10:01:14

AlphaGalileo Not only do optical fibers transmit information every day around the world at the speed of light, but they can also be harnessed for the transport of quantum information. In the current issue of Nature Photonics, a research team of Innsbruck physicists led by Rainer Blatt and Tracy Northup report how they have directly transferred the quantum information stored in an atom onto a particle of light. Such information could then be sent over optical fiber to a distant atom....

Recycling In The Quantum World Could Lead To Better Teleportation
2013-01-17 04:31:35

Alan McStravick for redOrbit.com - Your Universe Online What Einstein once referred to as “spooky action at a distance” could be our way into a 'Star Trek' future Watching the original 'Star Trek' series as a child, the most enthralling part of any episode was the moment they dissolved during teleportation on their way down to an alien planet. The science behind that at-one-time fiction shows it is now en route to becoming fact. The possibility of teleportation was first...

2012-12-17 14:35:20

While some theoretical physicists make predictions about astrophysics and the behavior of stars and galaxies, others work in the realm of the very small, which includes quantum physics. Such is the case at UC Santa Barbara, where theoretical physicists at the Kavli Institute for Theoretical Physics (KITP) cover the range of questions in physics. Recently, theoretical physicists at KITP have made important strides in studying a concept in quantum physics called quantum entanglement, in...


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bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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