Home > News > Now You See It: How To Spot Quantum Behaviour
February 18th, 2010
Now You See It: How To Spot Quantum Behaviour
Abstract:
Distinguishing quantum behaviour from its classical counterpart is harder than it sounds. Now a group of theorists have worked out how a few simple measurements can do the trick.
Today, Neill Lambert at the Institute of Physical and Chemical Research (RIKEN) in Japan and few buddies say they've solved the problem. What they've done is "formulate a set of inequalities that would allow an experimentalist to exclude the possibility of a classical description of transport through a nanostructure."
All an experimentalist has to do is measure the local charge in the device as well as the current flow through it. If the results violate the Lambert team's inequalities, then there's definitely quantum behaviour in the air.
That's a useful trick to have up your sleeve but it may have wider application. Lambert and company say that similar inequalities can be derived to test the quantum behaviour of other systems such as atom-field interactions in quantum optics and the quantum behaviour of networks of quantum dots, Cooper pair boxes and even molecules.
Source:
technologyreview.com
Bookmark:
News and information
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
AXEON Acquires Assets of Leading Reverse Osmosis Systems Manufacturer June 17th, 2013
Physics
Data Highways for Quantum Information June 13th, 2013
2-D electronics take a step forward: Rice, Oak Ridge labs make semiconducting films for atom-thick circuits June 10th, 2013
The Dance of the Atoms June 10th, 2013
Carbon nanotubes for molecular magnetic resonances June 9th, 2013
Discoveries
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Iranian Scientists Produce Dynamometer for Nanoparticles, Biocells June 15th, 2013
Announcements
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
AXEON Acquires Assets of Leading Reverse Osmosis Systems Manufacturer June 17th, 2013
Quantum Dots/Rods
New quantum dot technique combines best of optical and electron microscopy June 12th, 2013
CNSE Welcomes Record Number of Students, Majority of Whom are New Yorkers, for Prestigious Summer Internship Program June 12th, 2013
Perfectly doped quantum dots yield colors to dye for May 11th, 2013
Researchers use graphene quantum dots to detect humidity and pressure May 8th, 2013
Quantum nanoscience
Data Highways for Quantum Information June 13th, 2013
Spooky action put to order Different types of 'entanglement' classified June 6th, 2013
Quantum teleportation between atomic systems over long distances June 6th, 2013
Study suggests second life for possible spintronic materials: Ohio University research merges manganese, gallium nitride in uniform layer June 6th, 2013