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 August 1, 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 August 1, 2014).

Share This




More Matter & Energy News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Tesla, Panasonic Ink Deal To Make Huge Battery 'Gigafactory'

Tesla, Panasonic Ink Deal To Make Huge Battery 'Gigafactory'

Newsy (July 31, 2014) — The deal will help build a massive battery factory that Tesla says will produce 500,000 lithium batteries by 2020. Video provided by Newsy
Powered by NewsLook.com
Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) — British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
7 Ways to Use Toothpaste: Howdini Hacks

7 Ways to Use Toothpaste: Howdini Hacks

Howdini (July 30, 2014) — Fresh breath and clean teeth are great, but have you ever thought, "my toothpaste could be doing more". Well, it can! Lots of things! Howdini has 7 new uses for this household staple. Video provided by Howdini
Powered by NewsLook.com
Smoked: 2015 Ducati Diavel Vs 2014 Chevy Corvette Stingray Drag Race

Smoked: 2015 Ducati Diavel Vs 2014 Chevy Corvette Stingray Drag Race

Cycle World (July 30, 2014) — The Bonnier Motorcycle Group presents Smoked; a three part video series. In this episode the 2015 Ducati Diavel takes on the 2014 Chevy Corvette Stingray Video provided by Cycle World
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:
from the past week

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