Latest Quantum state Stories

Chaotic behavior is the rule, not the exception, in the world we experience through our senses, the world governed by the laws of classical physics.Even tiny, easily overlooked events can completely change the behavior of a complex system, to the point where there is no apparent order to most natural systems we deal with in everyday life.The weather is one familiar case, but other well-studied examples can be found in chemical reactions, population dynamics, neural networks and even the stock...

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...

Researchers at UC Santa Barbara have recently demonstrated a breakthrough in the quantum control of photons, the energy quanta of light. This is a significant result in quantum computation, and could eventually have implications in banking, drug design, and other applications.In a paper to be published in today's issue of the journal Nature, UCSB physics researchers Max Hofheinz, John Martinis, and Andrew Cleland document how they used a superconducting electronic circuit known as a Josephson...

Exquisitely sensitive microwave amplifier increases nano-scale measurement accuracy; could lead to quantum computing breakthroughsIn the weird world of quantum mechanics, sub-atomic particles such as electrons and photons behave in strange ways that make no sense on the human scale. One of the counter-intuitive concepts of quantum mechanics is the uncertainty principle, which says that you can't pin a particle down.That means at any given moment, you can't know exactly both a particle's...

For the first time, scientists have successfully teleported information between two separate atoms in unconnected enclosures a meter apart "“ a significant milestone in the global quest for practical quantum information processing.Teleportation may be nature's most mysterious form of transport: Quantum information, such as the spin of a particle or the polarization of a photon, is transferred from one place to another, without traveling through any physical medium. It has previously been...

A team of European scientists has proved within an ESA study that the weird quantum effect called 'entanglement' remains intact over a distance of 144 kilometres.The experiment allows ESA to take a step closer to exploiting entanglement as a way of communicating with satellites with total security. Quantum entanglement is one of the many non-intuitive features of quantum mechanics. If two photons of light are allowed to properly interact with one another, they can become entangled. One can...