News tagged with cold atoms
Is random lasing possible with a cold atom cloud?
May 18, 2009 |
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(PhysOrg.com) -- Random lasing, Robin Kaiser tells PhysOrg.com, is like standard lasing, with a little bit of a twist: “You don’t know the direction the photons will go, as you do with a more standard laser. This is becaus ...
Bouncing atoms may be the key to the future of gravimetry
Apr 27, 2009 |
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(PhysOrg.com) -- When studying cold atoms, scientists often use magnetic or optical traps to keep the atoms in place. However, in some cases experimentalists want to study free atoms, avoiding the effects of a trap. "One ...
New Research Promises Better Atomic Clocks
Apr 22, 2009 |
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(PhysOrg.com) -- The most accurate timekeepers in the world are atomic clocks, which tell time based on the absorption of a very specific and unchanging microwave frequency, which induces electrons in an atom to “jump” from ...
A step closer to an ultra precise atomic clock
Apr 16, 2009 |
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A clock that is so precise that it loses only a second every 300 million years - this is the result of new research in ultra cold atoms. The international collaboration is comprised of researchers from the ...
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Optical Atomic Clock: A long look at the captured atoms
Feb 05, 2008 |
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Optical clocks might become the atomic clocks of the future. Their "pendulum", i.e. the regular oscillation process which each clock needs, is an oscillation in the range of the visible light. As its frequency is higher than ...
Pushing the cold frontier in an orderly fashion
Sep 28, 2009 |
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Physicists are continually reaching new lows as they reduce the temperatures of samples in their laboratories. But even nano-kelvins are not low enough to overcome the entropy (a measure of the disorder in ...
Could a quantum motor do work?
Jul 07, 2009 |
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(PhysOrg.com) -- Ever since the idea of a quantum world was discovered, physicists have been trying their best to create applications and uses that mirror the accomplishments of the classical world. However, due to the fact ...
Tailoring the optical dipole force for use on molecules
Oct 29, 2009 |
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(PhysOrg.com) -- "Scientists have been working with dipole fields for quite some time," Peter Barker tells PhysOrg.com. "However, most of the work is focused on very small particles, like atoms, or on larger particles, such a ...
Buffer gas cooling could open up the field of ultracold physics
Sep 17, 2009 |
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(PhysOrg.com) -- "Scientists have been making Bose-Einstein Condensates [BECs] for nearly 15 years," Charlie Doret tells PhysOrg.com. "Essentially all BEC research to date, however, begins with laser cooling. Unfortunately, ...
Using a Superfluid for Dark-State Atomic Cooling
Dec 11, 2006 |
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“We are reviving key ideas used 15 years ago in the context of laser cooling and quantum optics and putting them in a completely new context,” Peter Zoller tells PhysOrg.com. Zoller, a professor at the University of Innsbr ...
Teleportation method proposed by Australian scientists
Jul 03, 2007 |
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Teleportation, a concept popularised in the original Star Trek television series, is edging closer to reality through work being conducted by theorists from The University of Queensland and Australian National ...
APEX reveals glowing stellar nurseries
Nov 11, 2008 |
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The region, called RCW120, is about 4200 light years from Earth, towards the constellation of Scorpius. A hot, massive star in its centre is emitting huge amounts of ultraviolet radiation, which ionises the ...
First images of solar system's invisible frontier
Space & Earth / Space Exploration
Jul 02, 2008 |
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NASA's sun-focused STEREO spacecraft unexpectedly detected particles from the edge of the solar system last year, allowing University of California, Berkeley, scientists to map for the first time the energized ...
Quantum memory and turbulence in ultra-cold atoms
Jul 20, 2009 |
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Scientists at MIT have figured out a key step toward the design of quantum information networks. The results are reported in the July 20th issue of Physical Review Letters and highlighted in APS's on-line journa ...
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