Physics Nobel goes to quantum theorists

Frenchman Serge Haroche and American David Wineland shared the prize for work involving photons.?

By Karl Ritter and Malcolm Ritter,?The Associated Press / October 9, 2012

In this combination of photos made Tuesday, American physicist David Wineland (l.) poses at his home in Boulder, Colo., and French physicist Serge Haroche speaks to the media in Paris, after they were named winners of the 2012 Nobel Prize in Physics.

Ed Andrieski (l.) and Michel Euler/AP

Enlarge

A Frenchman and an American shared the Nobel Prize in physics Tuesday for inventing methods to peer into the bizarre quantum world of ultra-tiny particles, work that could help in creating a new generation of super-fast computers.

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Serge Haroche of France and American David Wineland opened the door to new experiments in quantum physics in the 1990s by showing how to observe individual atoms and particles of light called photons while preserving their quantum properties.

Quantum physics, a field about a century old, explains a lot about nature but includes some weird-sounding behavior by individual, isolated particles. A particle resists our idea of either-or: it's not here or there, it's sort of both. It's not spinning clockwise or counter-clockwise, but a bit of both. It gets a definite location or spin only when it's measured.

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Working separately, the two scientists, both 68, developed "ingenious laboratory methods" that allowed them to manage and measure and control fragile quantum states, the Royal Swedish Academy of Sciences said.

Wineland traps ions ? electrically charged atoms ? and measures them with light, while Haroche controls and measures photons.

"Their ground-breaking methods have enabled this field of research to take the very first steps towards building a new type of superfast computer based on quantum physics," the academy said. "The research has also led to the construction of extremely precise clocks that could become the future basis for a new standard of time."

Haroche is a professor at the College de France and Ecole Normale Superieure in Paris. Wineland is a physicist at the National Institute of Standards and Technology, or NIST, and the University of Colorado in Boulder.

Haroche said he was out walking with his wife in Paris when he got the call from the Nobel judges.

"I was in the street and passing a bench so I was able to sit down," Haroche told a news conference in Stockholm by telephone. "It's very overwhelming."

He said his work in the realm of quantum physics could ultimately lead to unimaginably fast computers. "You can do things which are prohibited by the laws of classical physics," he told The Associated Press.

Haroche also said quantum research could help make GPS navigating systems more accurate.

Wineland told the AP he was sleeping when his wife answered the phone at 3:30 a.m. local time in Denver. He was utterly shocked even though his name had come up before.

Source: http://rss.csmonitor.com/~r/feeds/csm/~3/LCNMkrVHZm8/Physics-Nobel-goes-to-quantum-theorists

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