A long-exposure photo of laser light in 'donut modes' (light beams with no intensity in the middle). (Credit: Robert Fickler, University of Vienna)
TechAndComputer (Nov. 2, 2012) The Vienna research team led by Anton Zeilinger has achieved a new milestone in the history of quantum physics: The scientists were able to generate and measure the entanglement of the largest quantum numbers to date.
To this end, the researchers developed a new method for entangling single photons which gyrate in opposite directions. This result is a first step towards entangling and twisting even macroscopic, spatially separated objects in two different directions. The researchers at the Vienna Center for Quantum Science...
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World record for entanglement of twisted light quanta
- 02 November 2012
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A new order in the quantum world: Using laser beams scientists generated quantum matter with novel, crystal-like properties
- 02 November 2012
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Illustration of an ordering of five Rydberg-atoms. Green: atoms in the ground state. Red: Rydberg-atoms. Violet: Sphere of influence of the Rydberg-atoms. (Credit: MPQ, Quantum Many-Body Systems Division)
TechAndComputer (Nov. 2, 2012) By using laser beams MPQ scientists generate quantum matter with novel, crystal-like properties.
Both high-valued diamond and low-prized graphite consist of exactly the same carbon atoms. The subtle but nevertheless...
TechAndComputer (Nov. 2, 2012) By using laser beams MPQ scientists generate quantum matter with novel, crystal-like properties.
Both high-valued diamond and low-prized graphite consist of exactly the same carbon atoms. The subtle but nevertheless...
Particle and wave-like behavior of light measured simultaneously
- 01 November 2012
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Quantum mechanics predicts that photons, particles of light, are both particles and waves simultaneously. Physicists now give a new demonstration of this wave-particle duality of photons. (Credit: © Yahya Idiz / Fotolia)
TechAndComputer (Nov. 1, 2012) What is light made of: waves or particles? This basic question has fascinated physicists since the early days of science. Quantum mechanics predicts that photons, particles of light, are both particles and waves...
TechAndComputer (Nov. 1, 2012) What is light made of: waves or particles? This basic question has fascinated physicists since the early days of science. Quantum mechanics predicts that photons, particles of light, are both particles and waves...
Topological superconductors: Seeking a robust home for qubits
- 09 October 2012
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Researchers have demonstrated for the first time that qubits can successfully exist in a so called topological superconductor material even in the presence of impurities in the material and strong interactions among participating electrons. (Credit: Emily Edwards)
TechAndComputer (Oct. 9, 2012) If quantum computers are ever going to perform all those expected feats of code-breaking and number crunching, then their component qubits -- tiny ephemeral quantum cells...
TechAndComputer (Oct. 9, 2012) If quantum computers are ever going to perform all those expected feats of code-breaking and number crunching, then their component qubits -- tiny ephemeral quantum cells...
Switching cause and effect in quantum world? A causes B causes A
- 02 October 2012
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A new framework for quantum mechanics which does not assume a pre-existing global time. It demonstrates the possibility for two agents to perform a communication task in which it is impossible to tell with certainty who influences whom. (Credit: University of Vienna)
TechAndComputer (Oct. 2, 2012) One of the most deeply rooted concepts in science and in our everyday life is causality; the idea that events in the present are caused by events in the past and, in...
TechAndComputer (Oct. 2, 2012) One of the most deeply rooted concepts in science and in our everyday life is causality; the idea that events in the present are caused by events in the past and, in...