Quantcast
Last updated on April 21, 2014 at 4:56 EDT

Latest EPR paradox Stories

New Theory May Help Explain Why Nature Is Quantum
2013-05-14 12:41:52

Centre for Quantum Technologies at the National University of Singapore Like small children, scientists are always asking the question 'why?'. One question they've yet to answer is why nature picked quantum physics, in all its weird glory, as a sensible way to behave. Researchers Corsin Pfister and Stephanie Wehner at the Centre for Quantum Technologies at the National University of Singapore tackle this perennial question in a paper published 14 May in Nature Communications. We know...

2013-03-04 13:22:04

Physicists make first direct measurements of polarization states of light Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both overcomes some important challenges of Heisenberg's famous Uncertainty Principle and also is applicable to qubits, the building blocks of quantum information theory. They report their results in a paper published...

2010-11-18 17:16:36

Heisenberg Uncertainty Principle sets limits on Einstein's 'spooky action at a distance,' new research finds Researchers have uncovered a fundamental link between the two defining properties of quantum physics. Stephanie Wehner of Singapore's Centre for Quantum Technologies and the National University of Singapore and Jonathan Oppenheim of the United Kingdom's University of Cambridge published their work today in the latest edition of the journal Science. The result is being heralded as a...

2010-07-27 15:39:09

Uncertainty in the presence of a quantum memory A quantum particle is hard to grasp, because one cannot determine all its properties precisely at the same time. Measurements of certain parameter pairs such as position and momentum remain inaccurate to a degree given by Heisenberg's Uncertainty Principle. This is important for the security of quantum cryptography, where information is transmitted in the form of quantum states such as the polarization of particles of light. A group of...

7d4e344d66f2caded5af24682d86a6e31
2009-07-22 14:10:00

In comparison to classical physics, quantum physics predicts that the properties of a quantum mechanical system depend on the measurement context, i.e. whether or not other system measurements are carried out. A team of physicists from Innsbruck, Austria, led by Christian Roos and Rainer Blatt, have for the first time proven in a comprehensive experiment that it is not possible to explain quantum phenomena in non-contextual terms. The scientists report on their findings in the current issue...

2009-03-05 08:01:08

In quantum mechanics, a vanguard of physics where science often merges into philosophy, much of our understanding is based on conjecture and probabilities, but a group of researchers in Japan has moved one of the fundamental paradoxes in quantum mechanics into the lab for experimentation and observed some of the 'spooky action of quantum mechanics' directly.Hardy's Paradox, the axiom that we cannot make inferences about past events that haven't been directly observed while also acknowledging...

5427a2814ea640a11dc1e49676af01c21
2008-02-16 14:22:25

CAMBRIDGE, Mass. "” The strange world of quantum mechanics can provide a way to surpass limits in speed, efficiency and accuracy of computing, communications and measurement, according to research by MIT scientist Seth Lloyd. Quantum mechanics is the set of physical theories that explain the behavior of matter and energy at the scale of atoms and subatomic particles. It includes a number of strange properties that differ significantly from the way things work at sizes that people can...