Getting all entangled up
In the last decade, however, a more constructive aspect of entanglement has emerged, and it is now seen as a valuable resource that could provide significant improvements in our powers of communicatio...
Grand challenges for physics in the US
Experts identify the most pressing problems in physics today
DIY black holes could supply the missing link
Benchtop 'black holes' could bridge the gap between relativity and quantum mechanics
Read article: Quantum mechanics with single atoms and photons
Quantum mechanics with single atoms and photons
Some 100 years after the birth of quantum mechanics, physicists are still learning more about the interactions between light and matter
Joseph Weber 1919 – 2000
In the late 1950s, Weber became intrigued by the relationship between gravitational theory and laboratory experiments. His book, General Relativity and Gravitational Radiation, was published in 1961, ...
Breaking through the quantum limit
Andrey Geim of the Universities of Nijmegen and Manchester, and co-workers from Russia, Belgium and the UK, measured the amount of flux entering micron-sized aluminium discs, where edge effects are im...
Read article: New life for Schrödinger’s cat
New life for Schrödinger’s cat
When the formalism of quantum mechanics is applied to experiments involving microscopic objects such as electrons, we often find that the resulting description assigns finite probability amplitudes to...
Schrodinger’s cat comes into view
In his original thought experiment, Schrodinger imagined that a cat is locked in a box, along with a radioactive atom that is connected to a vial containing a deadly poison. If the atom decays, it cau...
Quantum entanglement spreads to Bose condensates
In a Bose-Einstein condensate a gas of atoms is cooled until the de Broglie wavelength of the atoms exceeds the inter-atom spacing. If the atoms are bosons – that is, if they have a “spin&...
Looking inside quantum dots
Manfred Bayer of the University of Wurzburg in Germany, and co-workers in Wurzburg and the National Research Council of Canada in Ottawa, studied indium gallium arsenide quantum dots grown on a galliu...
