Featured Research

from universities, journals, and other organizations

New method to generate Laughlin states with atomic systems

Date:
July 3, 2013
Source:
Universidad de Barcelona
Summary:
In 1998, the Nobel Prize in Physics was conferred to the discovery of a new type of quantum fluid with fractional charge excitations, known as Laughlin state. The production of this quantum state, which explains the behaviour of electrons in two-dimensional metallic plaques when they are exposed to intense magnetic fields, has been one of the most popular research topics on ultracold and Bose-Einstein condensed atoms for one decade. Now, new theoretical research proposes a method to generate this kind of states in two-dimensional systems of ultracold atoms, with possible applications in quantum computer.

In 1998, the Nobel Prize in Physics was conferred to the discovery of a new type of quantum fluid with fractional charge excitations, known as Laughlin state. The production of this quantum state, which explains the behaviour of electrons in two-dimensional metallic plaques when they are exposed to intense magnetic fields, has been one of the most popular research topics on ultracold and Bose-Einstein condensed atoms for one decade.

Now, a theoretical research developed by researchers from the University of Barcelona and the Institute of Photonic Sciences (ICFO) and published on Nature Communications proposes a method to generate this kind of states in two-dimensional systems of ultracold atoms, with possible applications in quantum computer.

"The research combines several modern ideas such as the generation of artificial magnetic fields, which enable to study phenomena such as fractional quantum Hall states (which gives rise to Laughlin states) in systems composed by neutral atoms and the use of nanoplasmonic planar traps (a type of collective oscillations of the conduction electrons in a metal at quantum level) to confine the system in a two-dimensional region," remarks Bruno Juliα, researcher from the University of Barcelona and first author of the paper.

According to numerical simulation, ultracold atoms would be suspended over a metallic surface by the action of a nanoplasmonic field. Once atoms are arranged like that, they would be lit by a laser that would enable to generate an artificial magnetic field that atoms would notice, as it happens with electrons on a metallic plaque. "It is an innovative research because we achieved to combine nanotechnology basics with ultracold atoms physics," explains Maciej Lewenstein, researcher at ICFO.

To achieve interactions between atoms, which at first is prohibited by Pauli principle, the quantum mechanical principle that states that no two identical fermions may occupy the same quantum state simultaneously, and a similar behaviour to electrons' charges repulsion, virtual excitation of each atom is used to produce an interatomic force and its intensity can be regulated in an experimental way.

The paper results from a collaboration among the Department of Structure and Constituents of Matter at the Faculty of Physics of the University of Barcelona and the groups on Theoretical Quantum-Nano Photonics and Quantum Optics Theory of the Institute of Photonic Sciences (ICFO).


Story Source:

The above story is based on materials provided by Universidad de Barcelona. Note: Materials may be edited for content and length.


Journal Reference:

  1. B. Juliα-Dνaz, T. Graί, O. Dutta, D.E. Chang, M. Lewenstein. Engineering p-wave interactions in ultracold atoms using nanoplasmonic traps. Nature Communications, 2013; 4 DOI: 10.1038/ncomms3046

Cite This Page:

Universidad de Barcelona. "New method to generate Laughlin states with atomic systems." ScienceDaily. ScienceDaily, 3 July 2013. <www.sciencedaily.com/releases/2013/07/130703101023.htm>.
Universidad de Barcelona. (2013, July 3). New method to generate Laughlin states with atomic systems. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2013/07/130703101023.htm
Universidad de Barcelona. "New method to generate Laughlin states with atomic systems." ScienceDaily. www.sciencedaily.com/releases/2013/07/130703101023.htm (accessed October 20, 2014).

Share This



More Matter & Energy News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

'Robotic Eyes' Helps Japan's Bipedal Bot Run Faster

'Robotic Eyes' Helps Japan's Bipedal Bot Run Faster

Reuters - Innovations Video Online (Oct. 16, 2014) — Japanese researcher uses an eye-sensor camera to enable a bipedal robot to balance itself, while running on a treadmill. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Lockheed Martin's Fusion Concept Basically An Advertisement

Lockheed Martin's Fusion Concept Basically An Advertisement

Newsy (Oct. 15, 2014) — Lockheed Martin announced plans to develop the first-ever compact nuclear fusion reactor. But some experts said the excitement is a little premature. Video provided by Newsy
Powered by NewsLook.com
First Confirmed Case Of Google Glass Addiction

First Confirmed Case Of Google Glass Addiction

Buzz60 (Oct. 15, 2014) — A Google Glass user was treated for Internet Addiction Disorder caused from overuse of the device. Morgan Manousos (@MorganManousos) has the details on how many hours he spent wearing the glasses, and what his symptoms were. Video provided by Buzz60
Powered by NewsLook.com
Science Proves Why Pizza Is So Delicious

Science Proves Why Pizza Is So Delicious

Buzz60 (Oct. 15, 2014) — The American Chemical Society’s latest video about chemistry in every day life breaks down pizza, and explains exactly why it's so delicious. Gillian Pensavalle (@GillianWithaG) has the video. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins