Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Squeeze light till it hurts on a quantum scale

Professor Howard Wiseman
Professor Howard Wiseman

Abstract:
An international team of physicists has pushed the boundaries on ultra-precise measurement by harnessing quantum light waves in a new way.

Squeeze light till it hurts on a quantum scale

Brisbane, Australia | Posted on September 24th, 2012

It is one thing to be able to measure spectacularly small distances using "squeezed" light, but it is now possible to do this even while the target is moving around.

An Australian-Japanese research collaboration made the breakthrough in an experiment conducted at the University of Tokyo, the results of which have been published in an article, "Quantum-enhanced optical phase tracking" in the prestigious journal, Science.

Leader of the international theoretical team Professor Howard Wiseman, from Griffith University's Centre for Quantum Dynamics (pictured), said this more precise technique for motion tracking will have many applications in a world which is constantly seeking smaller, better and faster technology.

"At the heart of all scientific endeavour is the necessity to be able to measure things precisely," Professor Wiseman said.

"Because the phase of a light beam changes whenever it passes through or bounces off an object, being able to measure that change is a very powerful tool."

"By using squeezed light we have broken the standard limits for precision phase tracking, making a fundamental contribution to science," he said. "But we have also shown that too much squeezing can actually hurt."

Dr Dominic Berry from Macquarie University has been collaborating with Professor Wiseman on the theory of this problem for many years.

"The key to this experiment has been to combine "phase squeezing" of light waves with feedback control to track a moving phase better than previously possible," Dr Berry said.

"Ultra-precise quantum-enhanced measurement has been done before, but only with very small phase changes. Now we have shown we can track large phase changes as well," he said.

Professor Elanor Huntington from UNSW Canberra, who directed the Australian experimental contribution, is a colleague of Professor Wiseman in the Centre for Quantum Computation and Communication Technology.

"By using quantum states of light we made a more precise measurement than is possible through the conventional techniques using laser beams of the same intensity," Professor Huntington said.

"Curiously, we found that it is possible to have too much of a good thing. Squeezing beyond a certain point actually degrades the performance of the measurement, making it less precise than if we had used light with no squeezing."
Participating research organisations: The University of Tokyo, Griffith University, Centre for Quantum Computation and Communication Technology (Australian Research Council), University of New South Wales (Canberra), Kyoto University, University of Waterloo (Ontario), Macquarie University, University of Queensland.

####

For more information, please click here

Contacts:
Professor Howard Wiseman
Director
Centre Staff
Centre for Quantum Dynamics
Telephone 61 (07) 373 57279
Fax 61 (07) 373 57773

Copyright © Griffith University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Discoveries

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

CWRU researchers efficiently charge a lithium-ion battery with solar cell: Coupling with perovskite solar cell holds potential for cleaner cars and more August 27th, 2015

Successful boron-doping of graphene nanoribbon August 27th, 2015

Announcements

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Photonics/Optics/Lasers

Glitter from silver lights up Alzheimer's dark secrets August 25th, 2015

Quantum diffraction at a breath of nothing: Physicists build stable diffraction structure in atomically thin graphene August 25th, 2015

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2015 conference August 25th, 2015

A little light interaction leaves quantum physicists beaming August 25th, 2015

Research partnerships

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Announcing Oxford Instruments and School of Physics signing a Memorandum of Understanding August 26th, 2015

Researchers combine disciplines, computational programs to determine atomic structure August 26th, 2015

Developing Component Scale Composites Using Nanocarbons August 26th, 2015

Quantum nanoscience

Quantum diffraction at a breath of nothing: Physicists build stable diffraction structure in atomically thin graphene August 25th, 2015

Southampton scientists find new way to detect ortho-para conversion in water August 25th, 2015

A little light interaction leaves quantum physicists beaming August 25th, 2015

Molecular trick alters rules of attraction for non-magnetic metals August 5th, 2015

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic