Navigation Links
Exotic particles, chilled and trapped, form giant matter wave
Date:5/25/2012

Physicists have trapped and cooled exotic particles called excitons so effectively that they condensed and cohered to form a giant matter wave.

This feat will allow scientists to better study the physical properties of excitons, which exist only fleetingly yet offer promising applications as diverse as efficient harvesting of solar energy and ultrafast computing.

"The realization of the exciton condensate in a trap opens the opportunity to study this interesting state. Traps allow control of the condensate, providing a new way to study fundamental properties of light and matter," said Leonid Butov, professor of physics at the University of California, San Diego. A paper reporting his team's success was recently published in the scientific journal Nano Letters.

Excitons are composite particles made up of an electron and a "hole" left by a missing electron in a semiconductor. Created by light, these coupled pairs exist in nature. The formation and dynamics of excitons play a critical role in photosynthesis, for example.

Like other matter, excitons have a dual nature of both particle and wave, in a quantum mechanical view. The waves are usually unsynchronized, but when particles are cooled enough to condense, their waves synchronize and combine to form a giant matter wave, a state that others have observed for atoms.

Scientists can easily create excitons by shining light on a semiconductor, but in order for the excitons to condense they must be chilled before they recombine.

The key to the team's success was to separate the electrons far enough from their holes so that excitons could last long enough for the scientists to cool them into a condensate. They accomplished this by creating structures called "coupled quantum wells" that separate electrons from holes in different layers of alloys made of gallium, arsenic and aluminum.

Then they set an electrostatic trap made by a diamond-shaped
'/>"/>

Contact: Susan Brown
scinews@ucsd.edu
858-246-0161
University of California - San Diego
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. New study confirms exotic electric properties of graphene
2. Exotic behavior when mechanical devices reach the nanoscale
3. Food and Beverage Giant Joins Kannapolis Research Center
4. Bay Area Youth to Represent ALS Patients at Giants and Angels Baseball Games on July 4th
5. Nevada Burning Man Festival Sees Giant Aerial Marijuana Bud Banner That Protests Hydroponics Hijacking
6. Reuters Highlights NutraPharma Financial Giant Predicts NutraPharma (OTCBB: NPHC) Shares Likely to Outperform the Market
7. Abt Electronics Becoming the Green Giant of Independent Retailers
8. VIASPACE CEO Discusses Giant King Grass at Industrial Biotechnology Congress in China
9. Trouble with sputter? Blame giant nanoparticles
10. Nanowires exhibit giant piezoelectricity
11. Carbon nanotube muscles generate giant twist for novel motors
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Exotic particles, chilled and trapped, form giant matter wave
(Date:5/1/2015)... 1, 2015 A new report ... drugs will reach $22.4bn in 2019. That revenue forecast ... and Market Prospects 2015-2025 ,  published in ... is to provide forecasts and qualitative analyses of the ... and consultancy in London, UK . ...
(Date:5/1/2015)... -- Albany Molecular Research Inc. (NASDAQ: AMRI ) ... President and Chief Executive Officer, will present at the ... on Wednesday, May 13, 2015 at 4:20 p.m. ET. ... can be accessed at AMRI,s Investor Relations web site at ... be archived for 90 days following the live presentation. ...
(Date:5/1/2015)... RESEARCH TRIANGLE PARK, N.C. , May 1, ... today that Roger Jeffs , Ph.D., President and Co-Chief ... update on the company,s business at the Deutsche Bank 40 ... Massachusetts . The presentation will take place ... and can be accessed via a live webcast on the ...
(Date:4/30/2015)... April 30, 2015  Roka Bioscience, Inc. (NASDAQ: ... advanced testing solutions for the detection of foodborne pathogens, ... first quarter of 2015 on May 7, 2015 after ... Bioscience will also host a conference call at 4:30 ... its first quarter financial results. During the conference call, ...
Breaking Biology Technology:Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 2Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 3Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 4Antithrombotic Drugs: World Industry and Market Prospects 2015-2025 5AMRI to Present at the Bank of America Merrill Lynch 2015 Health Care Conference 2Roka Bioscience to Report First Quarter 2015 Financial Results On May 7, 2015 2
... Tommy Thompson distinguished himself as the first Wisconsin governor elected ... new precedent: the first Wisconsin governor to be tagged with ... , , Tommy Thompson Thompson, who also served ... first term, will have one of the security technology firm ...
... -- Two years ago, I signed a budget that brought ... And on Monday, I signed a budget that moves Wisconsin forward. ... three things with this budget: cut spending and taxes, make education ... this budget does all three, and that we lived up to ...
... The average citizen may think Gov. Jim Doyle and the ... into the boxing ring of politics. And judging by some ... Capitol over the past two and a half years, Joe ... correct, however, as evidenced by some important tax changes contained ...
Cached Biology Technology:Tommy Thompson to get RFID implant 2Tommy Thompson to get RFID implant 3A budget that moves Wisconsin forward 2A budget that moves Wisconsin forward 3A budget that moves Wisconsin forward 4State tax compromises prove that partisanship can be set aside for a while 2State tax compromises prove that partisanship can be set aside for a while 3
(Date:4/27/2015)... , Apr. 27, 2015 NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... shipping to pre-order customers the first week of May, ... the month of May. Gino ... significant milestone for the company as Wocket® enters the ...
(Date:4/20/2015)... April 20, 2015 The announcement ... Glenbeigh Records Management (GRM), Ireland,s ... Islamic Bank. Having built up an impressive track record of ... leading player within the records management sector in ... double is GCC staffbase and employ a further eight staff ...
(Date:4/13/2015)... April 13, 2015 According ... "Global Biometrics Market Forecast & Opportunities, 2020", the global ... of around 14% till 2020. The biometrics market ... scale implementation and review of biometric management systems. ... new products with greater efficiency, are resulting in ...
Breaking Biology News(10 mins):Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 2Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 3Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2
... NIH-supported scientists will be presenting their latest research findings ... Research in Otolaryngology (ARO). When: February 19-23, 2011 ... Additional Information: Research topics to be presented by scientists ... Communication Disorders (NIDCD) will include: Deafness ...
... will disappear by 2200 as a result of warming ... says a new study by the University of Colorado ... The carbon resides in permanently frozen ground ... warming temperatures, which will impact not only the climate ...
... Scientists are reporting for the first time that ... potential to act as endocrine disruptors, which can interfere ... is not caused by microcystin toxins, long recognized as ... yet unidentified substances. As a result, the scientists are ...
Cached Biology News:NIDCD research at ARO Midwinter Meeting 2NIDCD research at ARO Midwinter Meeting 3NIDCD research at ARO Midwinter Meeting 4NIDCD research at ARO Midwinter Meeting 5NIDCD research at ARO Midwinter Meeting 6NIDCD research at ARO Midwinter Meeting 7Thawing permafrost likely will accelerate global warming 2Thawing permafrost likely will accelerate global warming 3
... HISTAR detection systems provide linking and ... with species specific primary antibodies for ... Visualisation is accomplished using an ultra-sensitive ... polymer labelling technology. Secondary antibodies are ...
... • Enzyme concentration - 5 units/µL ... in higher yields ,• Leaves an 'A' ... DNA polymerase which exhibits very high activity ... applications. To ensure the quality of the ...
... Recombinant DNA polymerase from Thermus aquaticus expressed ... contamination; 1 tube of 250 units enzyme/tube ... (Low DNA), is the same enzyme as ... through a proprietary separation process to ensure ...
Our original highly-purified, robust Taq Polymerase which delivers consistently high yields and minimal background...
Biology Products: