Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Japanese team fabricates single-photon sources in solid matter

12.09.2014

This breakthrough in quantum information processing was achieved using state-of-the-art diamond growth technology.

A research group led by Junichi Isoya, professor emeritus, University of Tsukuba and Tokuyuki Teraji, principal researcher, Optical and Electronic Materials Unit, NIMS, has successfully fabricated for the first time in the world single-photon sources of SiV (silicon vacancy) centers – one of the color centers in diamond during the growth of thin film diamond, which have high purity and crystalline quality – by introducing them at extremely low concentrations.


The research group resolved the challenging issue attributed to solid crystals, namely widely spread emission wavelengths, and succeeded in fabricating many single-photon sources that emit photons with nearly identical emission wavelengths.

Copyright : National Institute for Materials Science (NIMS)

By using this advanced technology to grow diamond thin film, the research group succeeded in fabricating many bright and stable single-photon sources at different locations in a crystal.

Furthermore, the group obtained nearly identical emission spectra, with an spectral overlap of 91 %, between two photons emitted from two single-photon sources that were fabricated at different locations in a crystal.

These results are promising as a key step toward the realization of using single-photon sources in solid matter applied to such fields as quantum optics, quantum computing and quantum information networks that involve quantum interference.

This research was jointly carried out with Fedor Jelezko, a professor at the University of Ulm in Germany, as part of Japan-Germany joint research (in nanoelectronics) on “quantum computing in isotopically engineered diamond,” supported by the JST Strategic International Collaborative Research Program.

The results of this research had been published in the 8-27-2014 issue of Nature Communications (Nature Communications 5, Article number:4739, doi:10.1038/ncomms5739)

Associated links

Mikiko Tanifuji | Research SEA News
Further information:
http://www.researchsea.com

Further reports about: Electronic Germany JST NIMS Nature Optical Science Strategic concentrations crystalline matter nanoelectronics networks spectra

More articles from Physics and Astronomy:

nachricht UNH scientists help provide first-ever views of elusive energy explosion
16.11.2018 | University of New Hampshire

nachricht NASA keeps watch over space explosions
16.11.2018 | NASA/Goddard Space Flight Center

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>