Featured Research

from universities, journals, and other organizations

Breakthrough for the quantum simulator: When ultra-cold atoms can be anything

Date:
March 20, 2010
Source:
University of Stuttgart
Summary:
For the first time, physicists have succeeded in describing a quantum simulator realizable with current technology. The scientists have shown that the level of control needed for such a simulator can be achieved using ultra-cold atoms in a highly excited Rydberg states.

For the first time, an international research team from the universities of Stuttgart, Innsbruck and Nottingham have succeeded in describing a quantum simulator realizable with current technology.

The theoretical physicists around Hendrik Weimer and Hans Peter Büchler from Stuttgart and Peter Zoller from Innsbruck present their results in Nature Physics.

The work goes back to a famous idea of Nobel laureate Richard Feynman. He realized that conventional computers lack the processing power to calculate the behavior of complex quantum systems. For the general description of a quantum spin system with 300 particles a computer would need more memory than there is available in the world; even if all the observable matter in the universe is processed into storage media. Therefore Feynman proposed to use a different quantum system as a quantum simulator. For this idea to work, the building blocks of the quantum simulator need to be controlled in a precise way in order to mimic the behavior of the simulated system.

The scientists led by Hans Peter Büchler and Peter Zoller have now been able to show that this level of control can be achieved using ultra-cold atoms in a highly excited Rydberg states. The team used the strong interactions between spatially close Rydberg atoms to tune the desired properties of the quantum simulator. "This method is a huge step towards the dream of a universal quantum simulator, which allows us to study the behavior of any other quantum system" says Büchler about the versatility of the Rydberg atoms.

Furthermore, the scientists were able show that the approach can also be used for a novel cooling technique. This allows for the creation of exotic states of matter such as a spin liquid, where magnetic order is absent even at very low temperatures. From their study physicists hope to gain novel insights about quantum many-body systems, having direct applications in condensed matter physics.

The work was conducted with in the transregional research center SFB/TRR 21 (Control of quantum correlations in tailored matter) and was supported by the German research foundation DFG and the Austrian science fund FWF.


Story Source:

The above story is based on materials provided by University of Stuttgart. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hendrik Weimer, Markus Müller, Igor Lesanovsky, Peter Zoller, Hans Peter Büchler. A Rydberg Quantum Simulator. Nature Physics, 2010; DOI: 10.1038/NPHYS1614

Cite This Page:

University of Stuttgart. "Breakthrough for the quantum simulator: When ultra-cold atoms can be anything." ScienceDaily. ScienceDaily, 20 March 2010. <www.sciencedaily.com/releases/2010/03/100315231554.htm>.
University of Stuttgart. (2010, March 20). Breakthrough for the quantum simulator: When ultra-cold atoms can be anything. ScienceDaily. Retrieved August 30, 2014 from www.sciencedaily.com/releases/2010/03/100315231554.htm
University of Stuttgart. "Breakthrough for the quantum simulator: When ultra-cold atoms can be anything." ScienceDaily. www.sciencedaily.com/releases/2010/03/100315231554.htm (accessed August 30, 2014).

Share This




More Matter & Energy News

Saturday, August 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Australian Airlines Relax Phone Ban Too

Australian Airlines Relax Phone Ban Too

Reuters - Business Video Online (Aug. 26, 2014) — Qantas and Virgin say passengers can use their smartphones and tablets throughout flights after a regulator relaxed a ban on electronic devices during take-off and landing. As Hayley Platt reports the move comes as the two domestic rivals are expected to post annual net losses later this week. Video provided by Reuters
Powered by NewsLook.com
Hurricane Marie Brings Big Waves to California Coast

Hurricane Marie Brings Big Waves to California Coast

Reuters - US Online Video (Aug. 26, 2014) — Huge waves generated by Hurricane Marie hit the Southern California coast. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Chinese Researchers Might Be Creating Supersonic Submarine

Chinese Researchers Might Be Creating Supersonic Submarine

Newsy (Aug. 26, 2014) — Chinese researchers have expanded on Cold War-era tech and are closer to building a submarine that could reach the speed of sound. Video provided by Newsy
Powered by NewsLook.com
Breakingviews: India Coal Strained by Supreme Court Ruling

Breakingviews: India Coal Strained by Supreme Court Ruling

Reuters - Business Video Online (Aug. 26, 2014) — An acute coal shortage is likely to be aggravated as India's supreme court declared government coal allocations illegal, says Breakingviews' Peter Thal Larsen. Video provided by Reuters
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