News tagged with quantum measurement
Watching an electron being born
Atomic processes take place on extremely short time scales. Measurements at the Vienna University of Technology (TU Vienna) can now visualize these processes.
May 15, 2012 |
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Micromechanical mirror performs under pressure... of light
(Phys.org) -- A team of scientists from PML's Quantum Measurement Division has designed and tested a novel device that may lead to substantial progress in the new and fast-moving field of optomechanics.
Apr 06, 2012 |
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First, fast, and faster
(Phys.org) -- Scientists in PML's Quantum Measurement Division have produced the first superluminal light pulses made by using a technique called four-wave mixing, creating two separate pulses whose peaks ...
Apr 06, 2012 |
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Researchers discover new quantum encryption method to foil hackers
A research team led by University of Toronto Professor Hoi-Kwong Lo has found a new quantum encryption method to foil even the most sophisticated hackers. The discovery is outlined in the latest issue of Physical Review Le ...
Apr 02, 2012 |
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Quantum copies do new tricks
One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...
Mar 22, 2012 |
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Dance like a neutrino: Quantum scheme to simulate neutrino oscillations
The behaviour of some of the most elusive particles in the known universe can be simulated using three atoms in a lab, researchers at the Centre for Quantum Technologies (CQT) at the National University of Singapore have ...
Mar 21, 2012 |
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Keeping it together: Protecting entanglement from decoherence and sudden death
(PhysOrg.com) -- Decoherence can be metaphorically seen as a quantum fall from grace: When quantum bits, or qubits, are in superposition – such as a single qubit simultaneously having both 1 and 0 values ...
Feb 27, 2012 |
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Scientists score one more victory over uncertainty in quantum physics measurements
(PhysOrg.com) -- Most people attempt to reduce the little uncertainties of life by carrying umbrellas on cloudy days, purchasing automobile insurance or hiring inspectors to evaluate homes they might consider ...
Feb 26, 2012 |
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High-power, 532 nm-wavelength compact green laser module with high efficiency, high-speed modulation capability
QD Laser, Inc., the Institute for Nano Quantum Information Electronics, the University of Tokyo, and Fujitsu Laboratories Limited today announced the successful development of a high-power 532 nm-wavelength ...
Jan 19, 2012 |
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Are you certain, Mr. Heisenberg? New measurements deepen understanding of quantum uncertainty
Heisenberg's Uncertainty principle is arguably one of the most famous foundations of quantum physics. It says that not all properties of a quantum particle can be measured with unlimited accuracy. Until now, this has often ...
Jan 17, 2012 |
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Quantum computing has applications in magnetic imaging
Quantum computing -- considered the powerhouse of computational tasks -- may have applications in areas outside of pure electronics, according to a University of Pittsburgh researcher and his collaborators.
Dec 19, 2011 |
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U of Toronto experiment named top breakthrough of 2011 by Physics World
Aephraim Steinberg and colleagues at the Centre for Quantum Information and Quantum Control at the University of Toronto had the top physics breakthrough of the year according to Physics World magazine.
Dec 16, 2011 |
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Adding up photons with a transition edge sensor
(PhysOrg.com) -- Scientists have demonstrated that a superconducting detector called a transition edge sensor (TES) is capable of counting the number of as many as 1,000 photons in a single pulse of light ...
Nov 14, 2011 |
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Kilogramme faces quantum diet after weight problem
The guardians of the world's most important standards of weights and measures have turned to the weird universe of quantum physics to try to resolve a dilemma.
Nov 06, 2011 |
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Redefining the kilogram and the ampere
New research using graphene presents the most precise measurements of the quantum Hall effect ever made, one of the key steps in the process to redefine two SI units.
Sep 29, 2011 |
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