Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > UQ scientists make a quantum leap in research

December 11th, 2007

UQ scientists make a quantum leap in research

Abstract:
University of Queensland researchers are among an international team to have made the first ever execution of a quantum calculation, a major step towards building the first quantum computers.

Story:
Professor Andrew White, from UQ's Centre for Quantum Computer Technology together with colleagues from the University of Toronto in Canada, said by manipulating quantum mechanically entangled photons - the fundamental particles of light - the prime factors of the number 15 were calculated.

"Prime numbers are divisible only by themselves and one, so the prime factors of 15 are three and five," Professor White said.

"Although the answer to this problem could have been obtained much more quickly by querying a bright eight-year-old, as the number becomes bigger and bigger the problem becomes more and more difficult.

"What is difficult for your brain is also difficult for conventional computers. This is not just a problem of interest to pure mathematicians: the computational difficulty of factoring very large numbers forms the basis of widely used internet encryption systems."

Ben Lanyon, UQ doctoral student and the research paper's first author, said calculating the prime factors of 15 was a crucial step towards calculating much larger numbers, which could be used to crack cryptographic codes that are unbreakable using conventional computers.

"Our goal is not to break these codes in practice, but to show that they can be broken, and motivate a move to a more secure system," Mr Lanyon said.

"These codes form the basis of most banking and computer security and has implications of how we keep all data secure in the future."

Professor White said in any computer a problem must be broken down into manageable chunks.

"Classical computers use two-level systems called bits (binary digits) while quantum computers use two-level 'quantum-mechanical' systems called qubits (quantum bits)," he said.

"A qubit is like a coin that can be heads (on), tails (off) or simultaneously heads AND tails (on and off) or any possible combination in-between.

"This is impossible with normal bits but one qubit can be in two possible states, two qubits can be in four, three qubits in eight, and so on. Quantum memory sizes grow exponentially with the number of qubits.

"Functional large-scale quantum computers may be as many years away, and it is hard to know how they will change the world, but change our world they will."

The research will be published in the prestigious Physical Review Letters later this month.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Quantum Computing

Tuning into quantum: Scientists unlock signal frequency control of precision atom qubits July 16th, 2018

A refined magnetic sense: Algorithms and hardware developed in the context of quantum computation are shown to be useful for quantum-enhanced sensing of magnetic fields July 2nd, 2018

Carbon nanotube optics poised to provide pathway to optical-based quantum cryptography and quantum computing: Researchers are exploring enhanced potential of carbon nanotubes for unique applications June 18th, 2018

Evidence for a new property of quantum matter revealed: Electrical dipole activity detected in a quantum material unlike any other tested June 11th, 2018

Discoveries

FEFU scientists reported on toxicity of carbon and silicon nanotubes and carbon nanofibers: Nanoparticles with a wide range of applying, including medicine, damage cells of microalgae Heterosigma akashivo badly. July 18th, 2018

In borophene, boundaries are no barrier: Rice U., Northwestern researchers make and test atom-thick boron's unique domains July 17th, 2018

Tuning into quantum: Scientists unlock signal frequency control of precision atom qubits July 16th, 2018

UMBC researchers develop nanoparticles to reduce internal bleeding caused by blast trauma July 13th, 2018

Announcements

Sirrus's Issued Patent Portfolio Continues To Accelerate July 18th, 2018

FEFU scientists reported on toxicity of carbon and silicon nanotubes and carbon nanofibers: Nanoparticles with a wide range of applying, including medicine, damage cells of microalgae Heterosigma akashivo badly. July 18th, 2018

In borophene, boundaries are no barrier: Rice U., Northwestern researchers make and test atom-thick boron's unique domains July 17th, 2018

Tuning into quantum: Scientists unlock signal frequency control of precision atom qubits July 16th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project