Navigation Links
Scientists discover new method of observing interactions in nanoscale systems

ATHENS, Ohio Scientists have used new optical technologies to observe interactions in nanoscale systems that Heisenbergs uncertainty principle usually would prohibit, according to a study published Jan. 17 in the journal Nature.

Researchers conducted experiments with high-powered lasers and quantum dots artificial atoms that could be the building blocks of nanoscale devices for quantum communication and computing to learn more about physics at the nanoscale.

One common phenomenon in physics is the Fano effect, which occurs when a discrete quantum state an atom or a molecule interacts with a continuum state of the vacuum or the host material surrounding it. The Fano effect changes the way an atom or molecule absorbs light or radiation, said Sasha Govorov, an Ohio University theoretical physicist who is co-author on the paper.

In experiments on nanoscale systems, Heisenbergs uncertainty principle sometimes blocks scientists from observing the Fano effect, Govorov explained. The interaction of the nanoscale system and its continuum state surroundings cant be detected.

But in a new high-resolution laser spectroscopy experiment led by M. Kroner and K. Karrai of the Center of NanoScience at the Ludwig-Maximilians University in Munich, Germany, scientists utilized a new method. They measured photons scattered from a single quantum dot while increasing the laser intensity to saturate the dots optical absorption. This allowed them to observe very weak interactions, signaled by the appearance of the Fano effect, for the first time.

A theory for the new nonlinear method was developed by Govorov. Our theory suggests that the nonlinear Fano effect and the method associated with it can be potentially applied to a variety of physical systems to reveal weak interactions, he said.

Scientists also can revisit older experiments on atoms by using modern tools such as highly coherent light sources that are strong enough to reveal such nonlinear Fano-effects, Karrai said. We can explore new frontiers in quantum optics, he noted.


Contact: Andrea Gibson
Ohio University

Related biology technology :

1. Carbon offset warning from international team of scientists
2. Study Examines Media Preferences of Life Scientists in Applied Markets
3. Fate Therapeutics Created by Leading Stem Cell Scientists to Pursue New Approaches to Stem Cell Therapies
4. Scientists Using Social Media to Inform Lab Purchasing Decisions
5. UW-Madison scientists guide human skin cells to embryonic state
6. Scientists create colorful brainbow images of the nervous system
7. Abbott Scientists Create One Molecule With Two Antibody Functions
8. Genzyme Recognized by Scientists as a Top Employer
9. New Corporate Website Launched - Focus on Life Scientists, Flow Cytometrists, & Clinicians
10. Scientists say sabercat bit like a pussycat
11. New Scientists Boost Disease-based Research at Boston Biomedical Research Institute
Post Your Comments:
(Date:11/24/2015)... Nov. 24, 2015  Clintrax Global, Inc., a worldwide provider of ... , today announced that the company has set a new quarterly ... quarter on quarter growth posted for Q3 of 2014 to Q3 ... Mexico , with the establishment of an ... --> United Kingdom and ...
(Date:11/24/2015)... PA (PRWEB) , ... November 24, 2015 , ... This ... entrepreneurs at competitive events in five states to develop and pitch their BIG ideas ... projects from each state are competing for votes to win the title of SAP's ...
(Date:11/24/2015)... SHPG ) announced today that Jeff ... 27 th Annual Healthcare Conference in New York ... a.m. EST (1:30 p.m. GMT). --> SHPG ) announced ... in the Piper Jaffray 27 th Annual Healthcare Conference in ... 1, 2015, at 8:30 a.m. EST (1:30 p.m. GMT). --> ...
(Date:11/24/2015)... 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) today announced that its Annual ... 11:00 a.m. Israel time, at the law offices ... Street, 36 th Floor, Tel Aviv, Israel . ... and Izhak Tamir to the Board of Directors; , ... , approval of an amendment to certain terms of options granted ...
Breaking Biology Technology:
(Date:10/26/2015)... and LAS VEGAS , Oct. 26, ... , an innovator in modern authentication and a founding ... the launch of its latest version of the Nok ... organizations to use standards-based authentication that supports existing and ... Authentication Suite is ideal for organizations deploying customer-facing applications ...
(Date:10/23/2015)... 23, 2015 Research and Markets ( ... Voice Recognition Biometrics Market 2015-2019" report to their ... The global voice recognition biometrics market to grow ... --> --> The report, ... based on an in-depth market analysis with inputs from ...
(Date:10/22/2015)... Oct. 22, 2015  Aware, Inc. (NASDAQ: AWRE ), a ... for its third quarter ended September 30, 2015.  ... of 2015 was $4.0 million, a decrease of 33% compared to ... the third quarter of 2015 was $2.2 million, or $0.10 per ... share, in the same period a year ago.  ...
Breaking Biology News(10 mins):