Featured Research

from universities, journals, and other organizations

Electrified diamonds: Physicists on the trail of quantum information

Date:
November 19, 2013
Source:
Universität Basel
Summary:
With the help of tiny diamond crystals, physicists have discovered new possibilities of quantum information: The scientists discovered at specific circumstances electric currents that made it possible to identify defects in the carbon lattice of single diamonds measuring only a few nanometers.

Scanning tunneling microscopy image showing the surface structure of nanodiamonds.
Credit: Image courtesy of Universität Basel

With the help of tiny diamond crystals, physicists at the University of Basel have discovered new possibilities of quantum information: The scientists discovered at specific circumstances electric currents that made it possible to identify defects in the carbon lattice of single diamonds measuring only a few nanometers.

The results have been published online in the magazine Nano-Letters.

The team from the University of Basel and the French German Research Institute St. Louis (ISL) investigated diamond crystals of the size of only five nanometers (five millionths millimeter) using scanning tunneling microscopy and atomic force microscopy. The physicists then identified the atomic structure of the surface and observed crystalline, hexagonal carbon facets as well as graphitic reconstructions. In doing so, they discovered extra currents at specific voltages when the crystals were illuminated by green light.

These extra currents are related to the presence of defects in the carbon lattice of diamonds, so called Nitrogen-vacancy centers (NV-centers) that are optically active. These centers are promising candidates for future applications in quantum information processing systems, spin-magnetometry sensors or single photon sources. Their identification in the range of less than ten nanometers would have been very difficult with conventional methods, which is why the scientists applied a combination of different methods.

"With this study, we are able to show that it is possible to prove, with high resolution, the presence of optical centers in single nanodiamonds," says Prof. Ernst Meyer of the Department of Physics at the University of Basel. In the future, NV-centers could be used in quantum computers that work much more efficiently than conventional computers.


Story Source:

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


Journal Reference:

  1. Rémy Pawlak, Thilo Glatzel, Vincent Pichot, Loïc Schmidlin, Shigeki Kawai, Sweetlana Fremy, Denis Spitzer, Ernst Meyer. Local Detection of Nitrogen-Vacancy Centers in a Nanodiamond Monolayer. Nano Letters, 2013; 131107010035009 DOI: 10.1021/nl402243s

Cite This Page:

Universität Basel. "Electrified diamonds: Physicists on the trail of quantum information." ScienceDaily. ScienceDaily, 19 November 2013. <www.sciencedaily.com/releases/2013/11/131119082832.htm>.
Universität Basel. (2013, November 19). Electrified diamonds: Physicists on the trail of quantum information. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2013/11/131119082832.htm
Universität Basel. "Electrified diamonds: Physicists on the trail of quantum information." ScienceDaily. www.sciencedaily.com/releases/2013/11/131119082832.htm (accessed September 2, 2014).

Share This




More Matter & Energy News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Google Teases India Event, Possible Android One Reveal

Google Teases India Event, Possible Android One Reveal

Newsy (Sep. 1, 2014) — Google has announced a Sept. 15 event in India during which they're expected to reveal their Android One phones. Video provided by Newsy
Powered by NewsLook.com
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

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