News tagged with atomic frequency comb
Physicists create first 'frequency comb' to probe ultraviolet wavelengths
Physicists at JILA have created the first "frequency comb" in the extreme ultraviolet band of the spectrum, high-energy light less than 100 nanometers (nm) in wavelength. Laser-generated frequency combs are the most accurate ...
Feb 01, 2012 |
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Future 'comb on a chip': NIST's compact frequency comb could go places
Laser frequency combs -- extraordinarily precise tools for measuring frequencies (or colors) of light -- have helped propel advances in timekeeping, trace gas detection and related physics research to new ...
Oct 26, 2011 |
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Long-distance quantum communication gets closer as physicists increase light storage efficiency by an order of magnitude
(PhysOrg.com) -- In a new demonstration of reversible light storage, physicists have achieved storage efficiencies of more than a magnitude greater than those offered by previous techniques. The new method could be useful ...
Mar 01, 2010 |
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Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
Oct 29, 2009 |
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Atomic clock comparison via data highways
(Phys.org) -- Optical atomic clocks measure time with unprecedented accuracy. However, it is the ability to compare clocks with one another that makes them applicable for high-precision tests in fundamental ...
Apr 27, 2012 |
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Team generates frequency comb with more than 100 terahertz bandwidth
Many of the communication tools of today rely on the function of light or, more specifically, on applying information to a light wave. Up until now, studies on electronic and optical devices with materials that are the foundations ...
Mar 07, 2012 |
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Fuel for fusion
Oak Ridge National Laboratory's Fusion Pellet Fueling Lab has been at the center of design and testing of plasma fueling systems for tokamak research applications for decades. Since the mid-1970s, lab researchers ...
Jan 06, 2012 |
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Single magnesium ion brought to standstill by means of novel, simple laser cooling
Quantum logic is quite a new and absolutely fascinating field of physics and might – ultimately – lead to the fabrication of a quantum computer. And it could also aid the search for the "theory of ...
Sep 29, 2011 |
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Fundamental matter-antimatter symmetry confirmed
International collaboration including MPQ scientists sets a new value for the antiproton mass relative to the electron with unprecedented precision.
Jul 28, 2011 |
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U.Va.'s Pfister accomplishes breakthrough toward quantum computing
A sort of Holy Grail for physicists and information scientists is the quantum computer. Such a computer, operating on the highly complex principles of quantum mechanics, would be capable of performing specific calculations ...
Jul 15, 2011 |
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A quiet phase: NIST optical tools produce ultra-low-noise microwave signals
By combining advanced laser technologies in a new way, physicists at the National Institute of Standards and Technology (NIST) have generated microwave signals that are more pure and stable than those from ...
Jun 27, 2011 |
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Off-the-shelf electronics turn up gain on spectroscopy
Whether the object of attention is a novel aspect of the universe or an enigmatic and distant colleague, listening is key to nearly any effort to seek understanding. And not just with your ears. Spectroscopy, the study of ...
Jan 11, 2011 |
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Physicists break color barrier for sending, receiving photons
University of Oregon scientists have invented a method to change the color of single photons in a fiber optic cable. The laser-tweaked feat could be a quantum step forward for transferring and receiving high ...
Sep 30, 2010 |
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JILA frequency comb system detects gas impurities to aid semiconductor manufacturing
Purity of ingredients is a constant concern for the semiconductor industry, because a mere trace of contaminants can damage or ruin tiny devices. In a step toward solving a long-standing problem in semiconductor manufacturing, ...
Aug 04, 2010 |
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