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:10/12/2017)... (PRWEB) , ... October 12, ... ... ) has launched Rosalind™, the first-ever genomics analysis platform specifically designed for ... complexity. Named in honor of pioneering researcher Rosalind Franklin, who made a ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... it will be hosting a Webinar titled, “Pathology is going digital. Is your ... on digital pathology adoption best practices and how Proscia improves lab economics and ...
(Date:10/11/2017)... Florida (PRWEB) , ... October 11, 2017 , ... ... Drug Administration (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 ... for the treatment of osteosarcoma. SBT-100 is able to cross the cell membrane ...
(Date:10/10/2017)... Parks Associates announced today that Tom Kerber , Director ... , October 11 in Scottsdale, Arizona . Kerber will ... safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and the introduction of ...
Breaking Biology Technology:
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
(Date:3/30/2017)... , March 30, 2017  On April 6-7, 2017, ... the Genome hackathon at Microsoft,s headquarters in ... competition will focus on developing health and wellness apps ... Hack the Genome is the first hackathon ... The world,s largest companies in the genomics, tech and ...
(Date:3/30/2017)... Trends, opportunities and forecast in this market ... (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, vein ... use industry (government and law enforcement, commercial and retail, ... others), and by region ( North America ... Pacific , and the Rest of the World) ...
Breaking Biology News(10 mins):