Subscribe free to our newsletters via your
. Space Industry and Business News .




CHIP TECH
Quantum holograms as atomic scale memory keepsake
by Staff Writers
St. Petersburg, Russia (SPX) Oct 23, 2014


Set up of the experiment showing the orthogonal side illumination. Image courtesy Vetlugin et al.

Russian scientists have developed a theoretical model of quantum memory for light, adapting the concept of a hologram to a quantum system. These findings from Anton Vetlugin and Ivan Sokolov from St. Petersburg State University in Russia are published in a study in EPJ D.

The authors demonstrate for the first time that it is theoretically possible to retrieve, on demand, a given portion of the stored quantised light signal of a holographic image - set in a given direction in a given position in time sequence.

This is done by shaping the control field both in space and time. The ultimate goal is to introduce into quantum holograms the ability not only to store quantum signals but also to perform transformations of their quantum states - an approach useful for quantum communication and computation.

Quantum memory differs from conventional memory currently used in computers in its ability to write in and retrieve signals preserving their quantum state. Holograms are well-known classical memory devices that allow optical images to be written and retrieved.

The authors of this study have previously suggested solving the problem of quantum memory for light by extending the idea of a classical hologram to a quantum domain. The hologram is written on a medium able to store quantum superposition - and not just the intensity of light beam as traditional holograms are.

The readout of both classical and quantum holograms is performed by the illumination of the medium with an external light pulse.

It is referred to as the control field and is scattered on the internal structure of the hologram. To do so, the authors apply common theoretical methods of quantum optics, including quantum description of cold atoms that compose the storage medium, as well as quantum theory of light propagation and interaction with the medium.


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
St. Petersburg State University
Computer Chip Architecture, Technology and Manufacture
Nano Technology News From SpaceMart.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





CHIP TECH
Superconducting circuits, simplified
Boston MA (SPX) Oct 21, 2014
Computer chips with superconducting circuits - circuits with zero electrical resistance - would be 50 to 100 times as energy-efficient as today's chips, an attractive trait given the increasing power consumption of the massive data centers that power the Internet's most popular sites. Superconducting chips also promise greater processing power: Superconducting circuits that use so-called J ... read more


CHIP TECH
Strengthening thin-film bonds with ultrafast data collection

Triplet threat from the sun

What a Star Wars laser bullet really looks like

Engineers Harvest and Print Parts for New Breed of Aircraft

CHIP TECH
Canadian military communications getting upgrade

Russia to Orbit 9 MilCom Satellites by 2020

Thales providing satcom capability to Qatar

Development of software for electronic warfare resumes

CHIP TECH
SpaceX may soon start landing rockets on a platform

SpaceX returns to Earth loaded with lab results

Proton-M Lofts Express-AM6 Satellite

China Completes Country's Largest Spaceport

CHIP TECH
Russian Bank Offers 5 Billion Rubles for GLONASS

Galileo duo handed over in excellent shape

With IRNSS-1C, India a Step Closer to Own Navigation Satellite System

ISRO to Launch India's Third Navigation Satellite on October 16

CHIP TECH
Charles River Analytics awarded NASA contract to improve aviation safety

Brazil inks deal for Gripen aircraft

US agrees deal to buy 43 more F-35 fighters: Pentagon

Brazil, Argentina to negotiate over Gripen aircraft

CHIP TECH
Quantum holograms as atomic scale memory keepsake

Precise and programmable biological circuits

Superconducting circuits, simplified

Researchers develop world's thinnest electric generator

CHIP TECH
Copernicus operations secured until 2021

ECOSTRESS Will Monitor Plant Health

China Launches New Satellite Via Orbital Carrier Rocket

China to help map Guyana's mineral resources: minister

CHIP TECH
Delhi chokes on toxic smog after festival of lights

Major breakthrough could help detoxify pollutants

US hid troop exposure to chemical agents in Iraq: report

Days of heavy air pollution blight northern China




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.