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Old 01-06-2013, 12:44 PM   #1604
Raymond42262
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Join Date: Oct 2005
Location: The South
Posts: 453
My Ride: Is German
Quote:
Originally Posted by Rubenk View Post
My understanding of quantum computings is that ANYthing can be computed just by using one piece of the puzzle. Quantum computers can do that on such an astronomicaly different scale than a supercomputer that it is hardly comparable.

Anyone who has watched Dr. Who and the regeneration cube(pandorica?) is familiar with the concept.
Quote:
Originally Posted by SamDoe1 View Post
Just did some light reading on quantum computing. While they are substantially more powerful and can take advantage of substantially more data, it still doesn't explain how they can create something from nothing.

How is it possible to accurately generate a million random pixels from one random pixel without data error?

Also, Dr. Who is not a scientific journal...

Physicists have created a quantum gas capable of reaching temperatures below absolute zero, paving the way for future quantum inventions.

The chilly substance was composed of potassium atoms which were held in a lattice arrangement using a combination of lasers and magnetic fields. According to a news report in the journal Nature, by tweaking the magnetic fields the research team were able to force the atoms to attract rather than repel one another and reveal the sub-absolute zero properties of the gas.
“This suddenly shifts the atoms from their most stable, lowest-energy state to the highest possible energy state, before they can react,” said Ulrich Schneider of the Ludwig Maximilian University in Munich to Nature. “It’s like walking through a valley, then instantly finding yourself on the mountain peak.”

Schneider’s findings were published Jan. 3 in Science.


Previously absolute zero was considered to be the theoretical lower limit of temperature as temperature correlates with the average amount of energy of the substance’s particles. At absolute zero particles were thought to have zero energy.

Moving into the sub-absolute zero realm, matter begins to display odd properties. Clouds of atoms drift upwards instead of down, while the atomic matrix’s ability to resist collapsing in on itself echoes the forces causing the universe to expand outwards rather than contracting under the influence of gravity.

The ability to produce a relatively stable substance at several billionths of a Kelvin below absolute zero will allow physicists to better study and understand this curious state, possibly leading to other innovations.

“This may be a way to create new forms of matter in the laboratory,” said Wolfgang Ketterle, a Nobel laureate at MIT, commenting in Nature on the results.

Source: Wired.co.uk


If temperatures exist below absolute zero, I wonder if speeds exist beyond light?
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