Navigation Links
Scientists discover new method of observing interactions in nanoscale systems
Date:1/16/2008

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
gibsona@ohio.edu
740-597-2166
Ohio University
Source:Eurekalert

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:
*Name:
*Comment:
*Email:
(Date:3/23/2017)... GREENWOOD VILLAGE, Colo. , March 23, 2017 /PRNewswire/ ... million in Series A financing and note conversion to ... products. Cool Planet is focused on developing products that ... raised nearly $30 million in the last 18 months. ... Coppel and North Bridge Venture Partners. ...
(Date:3/22/2017)... March 22, 2017  Ascendis Pharma A/S (Nasdaq: ... TransCon technology to address significant unmet medical needs ... the full year ended December 31, 2016. ... our company as we broadened our pipeline and ... rare disease company with an initial focus on ...
(Date:3/22/2017)... , March 22, 2017 ... fragmented, states a research report by Transparency Market Research ... Inc., Amgen Inc., and AbbVie Inc., accounted for a ... The prominent players in this market are focusing aggressively ... product portfolio, which is likely to lead to market ...
(Date:3/22/2017)... (PRWEB) , ... March 21, 2017 , ... Premier executive ... & Life Science Search Firm by Hunt Scanlon Media. , Hunt Scanlon ... and the most widely referenced global news source in the human capital sector. , ...
Breaking Biology Technology:
(Date:3/2/2017)... , March 2, 2017 Summary ... to better understand Merck KGaA and its partnering interests ... https://www.reportbuyer.com/product/3605601/ Description The Partnering Deals and ... the partnering activity of one of the world,s leading ... are prepared upon purchase to ensure inclusion of the ...
(Date:3/2/2017)... , March 2, 2017 Australian stem ... (ASX: CYP), has signed an agreement with the ... the Monash Biomedicine Discovery Institute and Department of Pharmacology ... conduct a further preclinical study to support the use ... of asthma.  Asthma is a chronic, ...
(Date:2/28/2017)... 2017   Acuant , a leading provider of ... enhancements to new and core technologies building upon the ... mobile and desktop Acuant FRM TM facial recognition ... real time manual review of identity documents by accredited ... fastest and most accurate capture software to streamline workflows ...
Breaking Biology News(10 mins):