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 July 24, 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 July 24, 2014).

Share This




More Matter & Energy News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) — When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) — 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com
Boeing Ups Outlook on 52% Profit Jump

Boeing Ups Outlook on 52% Profit Jump

Reuters - Business Video Online (July 23, 2014) — Commercial aircraft deliveries rose seven percent at Boeing, prompting the aerospace company to boost full-year profit guidance- though quarterly revenues missed analyst estimates. Bobbi Rebell reports. 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