Monday, December 22, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung Introduces SE790C Curved Monitor
Chinese Motion-sensing VR Glasses Coming On Kickstarter
Kodak Returns To CES With Consumer Product Line
North Korea Suggests Joint Inverstigation With U.S. Over Sony Hacking
T-Mobile to Pay $90 Million To Settle Case With FCC
New Trojan Targetted Banks Wordlwide
FBI Confirms North Korea Was Behind Sony Hack
Apple Responds To BBC's Allegations Over Working Conditions In Chinese Factory
Active Discussions
Digital Audio Extraction and Plextools
Will there be any trade in scheme for the coming PSP Go?
Hello, Glad to be Aboard!!!
Best optical drive for ripping CD's? My LG 4163B is mediocre.
Hi All!
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
 Home > News > General Computing > Optical...
Last 7 Days News : SU MO TU WE TH FR SA All News

Monday, September 20, 2010
Optical Chip Enables New Approach to Quantum Computing


Scientists from Bristol's Centre for Quantum Photonics have developed a silicon chip that could be used to perform complex calculations and simulations using quantum particles in the near future.

The new approach to quantum computing that could soon be used to perform complex calculations that cannot be done by today?s computers.

The researchers believe that their device represents a new route to a quantum computer ? a powerful type of computer that uses quantum bits (qubits) rather than the conventional bits used in today?s computers.

Unlike conventional bits or transistors, which can be in one of only two states at any one time (1 or 0), a qubit can be in several states at the same time and can therefore be used to hold and process a much larger amount of information at a greater rate.

"It is widely believed that a quantum computer will not become a reality for at least another 25 years," says Professor Jeremy O?Brien, Director of the Centre for Quantum Photonics. "However, we believe, using our new technique, a quantum computer could, in less than ten years, be performing calculations that are outside the capabilities of conventional computers."

The technique developed in Bristol uses two identical particles of light (photons) moving along a network of circuits in a silicon chip to perform an experiment known as a quantum walk. Quantum walk experiments using one photon have been done before and can even be modelled exactly by classical wave physics. However, this is the first time a quantum walk has been performed with two particles and the implications are far-reaching.

"Using a two-photon system, we can perform calculations that are exponentially more complex than before," says Prof O?Brien. "This is very much the beginning of a new field in quantum information science and will pave the way to quantum computers that will help us understand the most complex scientific problems."

In the short term, the team expect to apply their new results immediately for developing new simulation tools in their own lab. In the longer term, a quantum computer based on a multi-photon quantum walk could be used to simulate processes which themselves are governed by quantum mechanics, such as superconductivity and photosynthesis.

"Our technique could improve our understanding of such important processes and help, for example, in the development of more efficient solar cells," adds Prof O?Brien. Other applications include the development of ultra-fast and efficient search engines, designing high-tech materials and new pharmaceuticals.

The leap from using one photon to two photons is not trivial because the two particles need to be identical in every way and because of the way these particles interfere, or interact, with each other. There is no direct analogue of this interaction outside of quantum physics.

"Now that we can directly realize and observe two-photon quantum walks, the move to a three-photon, or multi-photon, device is relatively straightforward, but the results will be just as exciting" says Prof O?Brien. "Each time we add a photon, the complexity of the problem we are able to solve increases exponentially, so if a one-photon quantum walk has 10 outcomes, a two-photon system can give 100 outcomes and a three-photon system 1000 solutions and so on."

The group, which includes researchers from Tohoku University, Japan, the Weizmann Institute in Israel and the University of Twente in the Netherlands, now plans to use the chip to perform quantum mechanical simulations. The researchers are also planning to increase the complexity of their experiment not only by adding more photons but also by using larger circuits.

The research was published in the next issue of Science, Friday 17 September.


Previous
Next
UCLA Researchers Claim 300GHz Graphene Transistor        All News        DVDFab Blu-ray Ripper Released
UCLA Researchers Claim 300GHz Graphene Transistor     General Computing News      HDCP 'Master Key'Leaked Online

Get RSS feed Easy Print E-Mail this Message

Related News
Comparison: Quantum Dot Vs. OLED Displays
LG To Release Quantum Dot TVs in 2015
Samsung, LG Plan To Release QD TVs Next Year
TCL Announces Quantum-dot 55-in. UHD TV
Korean Researchers Advance Synthesis Process for Graphene Quantum Dots
Samsung Applied for Samsung Quantum Dot TV Trademark
Samsung To Launch Quantum Dot TVs This year
Apple's Retina Displays May Be Improved With Quantum Dots
New Kind of Magnetism Could Have Applications In New Memory Storage
Researchers Claim Quantum Computing Breakthrough
IBM Claims New Breakthrough In Quantum Computing
New Light Source Illuminates Path to Ultra Powerful Quantum Computers

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .