Navigation Links
First noiseless single photon amplifier
Date:11/12/2012

Research physicists have demonstrated the first device capable of amplifying the information in a single particle of light without adding noise.

The research collaboration, involving Griffith University, The University of Queensland and University of Science and Technology of China, was able to amplify the noisy quantum state of a single photon subjected to loss, without adding noise in the process; in fact, their amplification reduced the noise in the quantum state.

The results have been published today in "Heralded noiseless amplification of a photon polarization qubit", on the Nature Physics website.

Team leader, Professor Geoff Pryde from Griffith University's Centre for Quantum Dynamics said the breakthrough would provide a new tool for all sorts of new quantum technologies.

"This is the first time the information stored in a single photon has been amplified," Professor Pryde said.

"The technique works by combining the noisy quantum state with a 'clean' single photon in the amplifier, and using quantum teleportation to transfer the information onto the new photon.

"The most obvious application for this work is in improved quantum cryptography; secret messaging which is guaranteed secure by the laws of physics."

It is expected the results will stimulate further interest in the fundamental laws that govern how well amplifiers can work and in developing uses of noiseless amplification techniques for other quantum information technology applications.

Research into such applications is being pursued in Australia's Centre of Excellence for Quantum Computation and Communication Technology, as well as around the world. ​

Fellow team member Professor Tim Ralph from the University of Queensland said this breakthrough was the culmination of years of research.

"We have been developing the ideas and experimental techniques that led to this breakthrough for the past 4 years," Professor Ralph said.

"Quantum information is useful but very fragile and normal amplification techniques destroy it.

"The key feature of our photon amplifier is that it preserves the quantum information and may help overcome the current distance limitations of quantum communication."


'/>"/>

Contact: Helen Wright
Helen.wright@griffith.edu.au
61-755-529-250
Griffith University
Source:Eurekalert

Related biology technology :

1. China Cord Blood Corporation to Report Second Quarter and First Half of Fiscal 2013 Financial Results
2. Elektas Monaco System Used for First Time to Create VMAT Plan for Delivery on Varian Treatment System
3. Palatin Technologies, Inc. To Report Fiscal Year 2013 First Quarter Results; Teleconference and Webcast to be held on November 14, 2012
4. First Neurally Controlled, Powered Prosthetic Limb Is 2,109 Steps Closer To Realization
5. Pharmacyclics Reports Fiscal 2013 First Quarter Financial Results and Multiple PCI-32765 Presentations at the 54th American Society of Hematology Annual Meeting
6. PAREXEL International Reports First Quarter Fiscal Year 2013 Results
7. Top Contenders For the First Annual 2012 Fright Night Awards Presented By Cancer Bites Announced
8. First-of-its-kind self-assembled nanoparticle for targeted and triggered thermo-chemotherapy
9. MRI Interventions and Brainlab Launch European Commercialization Effort with First ClearPoint Case in Europe
10. Texas Teacher May Be Among First Lone Star Astronauts
11. Penn researchers make first all-optical nanowire switch
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/26/2016)... ... May 26, 2016 , ... After ... Panama Inc. at the City of Knowledge in Panama, a 6 year-old ... in the US earlier this year following FDA approval of a second application ...
(Date:5/25/2016)... ... 2016 , ... The Ankle Plating System 3 and Small ... fractures of the distal tibia and fibula. This system marks Acumed's continued commitment ... is composed of seven plate families that span the lateral, medial, and posterior ...
(Date:5/25/2016)... Melbourne, FL (PRWEB) , ... May 25, 2016 , ... ... of eight she tore her cruciate ligament in her left knee. Lady’s owner Hannah ... , a central Florida board-certified veterinary surgeon, to repair her cruciate ligament and help ...
(Date:5/24/2016)... , ... May 24, 2016 , ... ... newly re-branded identity. The new Media Cybernetics corporate branding reflects a results-driven revitalization ... imaging and image analysis. The re-branding components include a crisp, refreshed logo and ...
Breaking Biology Technology:
(Date:3/23/2016)... 2016 Einzigartige ... und Stimmerkennung mit Passwörtern     ... MESG ), ein führender Anbieter digitaler Kommunikationsdienste, ... SpeechPro zusammenarbeitet, um erstmals dessen Biometrietechnologie einzusetzen. ... Möglichkeit angeboten, im Rahmen mobiler Apps neben ...
(Date:3/17/2016)... ABI Research, the leader in transformative ... market will reach more than $30 billion by ... Consumer electronics, particularly smartphones, continue to boost the ... reach two billion shipments by 2021 at a ... Research Analyst at ABI Research. "Surveillance is also ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ) - ... Images ( http://www.apimages.com ) - Germany . ... new refugee identity cards. DERMALOG will be unveiling this device, and ... Hanover next week.   --> Germany ... the new refugee identity cards. DERMALOG will be unveiling this device, ...
Breaking Biology News(10 mins):