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:1/15/2014)... 2014 Two champions of science, technology, ... of an annual competition for middle and high school ... innovative STEM study. The competition presents students with real-world ... Engineering Aptitude, Mathematics, and Sciences is a program ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 AudioNotch is ... new therapy for the treatment of tinnitus. Patients listen ... frequency, and over a period of weeks to months, their ... Therapy in two forms: Notched Music and Notched White Noise. ...
(Date:1/14/2014)...  3D Communications, a leading provider of strategic communications services to corporations ... in the United States and ... , JD, is returning to the firm,s Washington, D.C. ... after more than two years of service as Associate Commissioner for ...
(Date:1/14/2014)... iLab Solutions, the leader in core facility ... of Product Strategy. In this role, Michelle will work with ... guide in the development of iLab products. Her main goal ... benefit to the scientific community by offering the most advanced, ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Former FDA Associate Commissioner Returns To 3D Communications 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2
... Tumors Associated ... with HER2-Positive Breast Cancer, SAN ANTONIO, Texas, Dec. ... a Phase II study on its,first-in-class, oral small molecule HER2 ... the combination of,TYKERB plus capecitabine (Xeloda(R)) showed a reduction in ...
... - Vasogen Inc.,(NASDAQ: VSGN ; TSX:VAS) and ... pharmaceutical and medical devices company, today,announced the ... System,in Germany. Celacade, a first-in-class therapy, is ... targets the destructive chronic,inflammation underlying the development ...
... Mednet, SWOG Will Enhance Quality and Speed Image Transfer at ... Cost While Ensuring 21 CFR Part 11 ... largest,diagnostic imaging network, today announced it has been selected by,Southwest ... trials cooperative groups in the United States, to provide a,secure, ...
Cached Biology Technology:GlaxoSmithKline Announces Data on TYKERB(R) (Lapatinib) Plus Capecitabine for the Treatment of HER2 Positive Breast Cancer Brain Metastases 2GlaxoSmithKline Announces Data on TYKERB(R) (Lapatinib) Plus Capecitabine for the Treatment of HER2 Positive Breast Cancer Brain Metastases 3GlaxoSmithKline Announces Data on TYKERB(R) (Lapatinib) Plus Capecitabine for the Treatment of HER2 Positive Breast Cancer Brain Metastases 4GlaxoSmithKline Announces Data on TYKERB(R) (Lapatinib) Plus Capecitabine for the Treatment of HER2 Positive Breast Cancer Brain Metastases 5GlaxoSmithKline Announces Data on TYKERB(R) (Lapatinib) Plus Capecitabine for the Treatment of HER2 Positive Breast Cancer Brain Metastases 6Vasogen and Grupo Ferrer Announce Initial Roll-out of Celacade - New Therapy for Chronic Heart Failure 2Vasogen and Grupo Ferrer Announce Initial Roll-out of Celacade - New Therapy for Chronic Heart Failure 3Vasogen and Grupo Ferrer Announce Initial Roll-out of Celacade - New Therapy for Chronic Heart Failure 4Vasogen and Grupo Ferrer Announce Initial Roll-out of Celacade - New Therapy for Chronic Heart Failure 5AG Mednet to Provide Image Network for Southwest Oncology Group 2
(Date:4/21/2014)... lower cholesterol can reduce heart attack and stroke risk, ... save the vision of diabetics, scientists say. , In ... of niacin to decrease bad cholesterol levels and raise ... for these patients, said Dr. Pamela Martin, biochemist at ... , Martin is Principal Investigator on a new ...
(Date:4/20/2014)... 20, 2014) A team of researchers from ... College, and Brandeis University has devised a wholly ... involving the so-called retromer protein complex. Retromer plays ... protein (APP) away from a region of the ... toxic byproduct amyloid-beta, which is thought to contribute ...
(Date:4/20/2014)... Although doctors have long known that people with Down ... leukemia (ALL) during childhood, they haven,t been able to ... Institute investigators has uncovered a connection between the two ... the journal Nature Genetics , the researchers track ... abnormality in Down syndrome to the cellular havoc that ...
Breaking Biology News(10 mins):Scientists target receptor to treat diabetic retinopathy 2Scientists target receptor to treat diabetic retinopathy 3'Chaperone' compounds offer new approach to Alzheimer's treatment 2'Chaperone' compounds offer new approach to Alzheimer's treatment 3Dana-Farber researchers uncover link between Down syndrome and leukemia 2Dana-Farber researchers uncover link between Down syndrome and leukemia 3
... La Jolla, CA - Salk Institute professor Terrence J. ... the neural networks revolution in computing in the 1980s, ... of Sciences. The Academy made the announcement today during ... the Academy recognizes distinguished and continuing achievements in original ...
... CARSON CITY, Nev. , April 27 State of ... by participating in The Prevention Plan™, a U.S. Preventive Medicine® program designed to ... before they progress. The program is projected to save Nevada ... , , ...
... , ATLANTA , April 27   Georgia Power received approval April 20 ... more solar options. , , , ... , , ... to include the following: , , , ...
Cached Biology News:Salk scientist Terrence Sejnowski elected to National Academy of Sciences 2U.S. Preventive Medicine Helps Participants of the State of Nevada Public Employees' Benefits Program (PEBP) Become Healthier 2U.S. Preventive Medicine Helps Participants of the State of Nevada Public Employees' Benefits Program (PEBP) Become Healthier 3Georgia Power's Green Energy Program Redesigned to Include More Solar Power 2
... advanced protein cross-linking techniques are defined by ... Shan S. Wong. This valuable hardcover guide ... and current application references. More than 300 ... cross-linking and conjugate preparation from selection ...
... The proteomic service includes protein separation ... using the PDQuest software package from ... mass spectrometry. In order to meet ... preparation, data analysis and format of ...
... provides reagents for immune complex disruption (ICD) ... samples using a combination of low pH ... and transferred to microplate wells which are ... antibody to HIV-1 p24. The immobilized monoclonal ...
... endotoxin-free plasmid DNA preparations are prepared ... quantities from 1mg to multi-gram scales. ... customer needs, and glycerol stocks are ... Transformation, clonal selection (Clonal selection includes ...
Biology Products: