Light Reading

Toshiba Claims Light Source Breakthrough

Light Reading
News Wire Feed
Light Reading
5/23/2005
50%
50%

CAMBRIDGE, U.K. -- Researchers at Toshiba Research Europe Ltd (TREL) in Cambridge today announced that they have developed a light source that can be used to send single photons in a regular stream through optical fibre over long distances. The device is needed for future quantum networks exploiting the particle-like properties of light. The results were announced at the prestigious Quantum Electronics and Laser Science (QELS) Conference in Baltimore.

The team has achieved the breakthrough by developing a semiconductor nanotechnology tailored for use with ordinary telecom fibre cables. It results from an initiative funded by the Department of Trade and Industry involving TREL, University of Cambridge and Imperial College.

The worlds dimmest fibre source contains a tiny ‘quantum dot’ of semiconductor, measuring just 45 nm in radius and 10nm in height, which emits photons (the particles of light) one at a time. By manipulating the way in which the dot was formed, the emitted photons were tuned to a wavelength that allows long distance propagation in ordinary fibre optic cables.

Dr Andrew Shields, head of the Quantum Information Group at TREL comments: "Exploiting the quantum properties of light allows us to communicate and process information in ways that have not been possible previously. A good example is in quantum cryptography, which allows us to verify the secrecy of information sent on single photons.”

“These developments show that single photon sources can now be applied to real communication systems," he added.

Prof Will Stewart, Chairman of Innos, late Chief Scientist at Marconi and who monitors progress in the project for DTI, adds “Quantum is nature’s digital information system - and the natural goal for our own digital systems. The team is to be congratulated on making a significant step along this road”

Single photon sources are needed for future applications in quantum information technology, such as quantum cryptography, a technique to distribute secret digital keys on a fibre-optic network. Here a single-photon source is required to improve the security and bit rate of current systems, which rely on strongly attenuated lasers to simulate single photon pulses. TREL, who have already developed a robust system for quantum key distribution, confirmed that the performance of the developed single photon source is sufficient for real applications and plan to integrate the device in their system within the next year.

TRELs work on single photon devices is funded in part by the Department of Trade and Industry/Engineering and Physical Sciences Research Council ‘Optical Systems for the Digital Age’ and European Commission ‘Information Society Technologies’ programmes.

Ian Williams, Programme Manager for the DTI's LINK Optical Systems Programme, said “This is a most impressive achievement from one of the most ambitious and technically challenging projects we supported under the LINK Optical Systems Programme. This advance now offers the prospect of great improvements in IT security with potential benefits to IT users worldwide."

Toshiba Corp.

(0)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View
Flash Poll
From The Founder
The New IP is actually bigger even than business. Like another hugely important tech that Light Reading is digging into right now, the New IP has the potential to change the world by fundamentally advancing what it is possible for people to achieve with communications.
LRTV Huawei Video Resource Center
Huawei Shares Its Vision of the Future of Mobile Networks Innovations

2|26|15   |   2:30   |   (0) comments


Mobile broadband is changing our lives. It's reshaping the Internet, industry, and society. It allows us to freely connect with one another anytime, anywhere. At this year's Mobile World Congress, Huawei will share its latest insights and newest ideas and technologies that will shape the future of MBB. They will showcase their end-to-end MBB solutions that will ...
LRTV Huawei Video Resource Center
Accelerate Digitizing, Boost Digital Business

2|26|15   |   6:14   |   (0) comments


A new digital revolution is leading us to a better connected world. Together with millions of digital partners, Huawei will help CSPs to build their digital service ecosystem and aggregate a wide variety of digital services. In this video, we find out how Huawei is going to help CSPs implement digital operations.
LRTV Huawei Video Resource Center
The Secret Recipe to Enabling Hyper-Growth Industries

2|26|15   |   3:38   |   (0) comments


With a number of successful cases on network capability exposure, Huawei is going to share the secret recipe to enabling hyper-growth markets with a step-by-step approach.
LRTV Documentaries
BTE 2015 Is Bigger & Even Better

2|25|15   |   03:13   |   (4) comments


This year's Big Telecom Event (BTE) in Chicago is going to provide more opportunities than ever for networking, getting to grips with key industry challenges and opportunities and, equally as important, having some fun.
LRTV Interviews
Light Reading ICT Leaders Roundtable at MWC 2015

2|12|15   |   1:07   |   (2) comments


On Sunday March 1, 2015, Light Reading will host an ICT Leaders Roundtable in partnership with Huawei. At this half-day event, CIOs, analysts and researchers will discuss key industry trends like virtualization in the cloud with a specific focus on new business models. Located at the luxurious Renaissance Hotel near the Fira Barcelona, space is limited so please ...
LRTV Documentaries
Going Green in 2015

2|12|15   |   02:04   |   (0) comments


Energy efficiency is set to be an incredibly hot topic in the telecom industry this year.
LRTV Custom TV
SDN & NFV: Where Are We Going From Here?

2|11|15   |   11:27   |   (0) comments


Vitesse Semiconductor CTO Martin Nuss gives his perspective on why SDN and NFV should be tightly interconnected and how he sees the industry moving forward.
LRTV Documentaries
Time for Gigabit Europe?

2|9|15   |   01:27   |   (4) comments


Gigabit broadband networks are springing up all around the US and they'll soon become more commonplace in Europe.
LRTV Interviews
Brocade Brings New IP Vision to 2020 Vision Executive Summit

2|3|15   |   4:23   |   (0) comments


In December 2014, Light Reading gathered telecom executives in Reykjavik, Iceland to discuss their vision for high-capacity networks through the end of the decade. The intimate, interactive meeting was set against the backdrop of Iceland's spectacular natural beauty. As one of the event's founding sponsors, Brocade's Kelly Herrell shared his company's strategy at ...
LRTV Interviews
Brocade's Kelly Herrell on the New IP

2|2|15   |   12:36   |   (0) comments


In December 2014, Steve Saunders sat down with Brocade VP of Software Networking Kelly Herrell at Light Reading's 2020 Vision executive summit in Reykjavik, Iceland. They spoke about Brocade's approach to the New IP, the future of the telecom industry, and more.
LRTV Huawei Video Resource Center
Dr. Dong Sun Talks About Carriers' Digital Transformation & Huawei’s Telco OS

1|29|15   |   6:28   |   (0) comments


Dr. Dong Sun, Chief Architect of Digital Transformation Solutions at Huawei, discusses how telecom operators can become digital ecosystem enablers and deliver optimal user experiences that are in real-time, on-demand, all-online, DIY and social (ROADS).
LRTV Huawei Video Resource Center
Huawei's Chief Network Architect Talks about Network Experience & Operators’ Strategies

1|29|15   |   3:39   |   (0) comments


In the digital age, network experience has become the primary productivity especially for telecom operators. In this video, Wenshuan Dang, Huawei’s Chief Network Architect, discusses how carriers can tackle the challenge of infrastructure complexity in order to enhance business agility and improve user experience.
Upcoming Live Events
March 17, 2015, The Cable Center, Denver, CO
April 14, 2015, The Westin Times Square, New York City, NY
May 12, 2015, Grand Hyatt, Denver, CO
All Upcoming Live Events
Infographics
Net neutrality, broadband services and the current outlook on data consumption, as presented by the New Jersey Institute of Technology.
Hot Topics
Cyber Security Expert Warns: You're Doing It Wrong
Sarah Thomas, Editorial Operations Director, 2/23/2015
10 Weirdly Useful IoT Devices
Eryn Leavens, Copy Desk Editor, 2/24/2015
Small Cells Enabling Location Services
Sarah Thomas, Editorial Operations Director, 2/25/2015
Is FCC Weighing Net Neutrality Changes?
Mari Silbey, Independent Technology Editor, 2/25/2015
MWC: Let the Madness Begin
Ray Le Maistre, Editor-in-chief, 2/23/2015
Like Us on Facebook
Twitter Feed
Webinar Archive
BETWEEN THE CEOs - Executive Interviews
Check out Light Reading's interview with Jay Samit, the newly appointed CEO of publicly traded SeaChange International Inc. With a resume that includes Sony, EMI, and Universal, Samit brings a reputation as an entrepreneur and a disruptor to his new role at the video solutions company. Hear what he had to say about the opportunities in video, as well as the outlook for cable, telco, OTT and mobile service providers.
G'day! And welcome to an entirely new feature on Light Reading -- our weekly "CEO-to-CEO" interview.