University of Warwick Researchers Identify Elusive White Dwarf Pulsar

University of Warwick researchers identify a white dwarf pulsar – a star type which has eluded astronomers for half a century Star lashes its neighbour with intense radiation beam every two… …

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Bridge of Stars Connects Two Largest Satellite Galaxies of Milky Way

The Magellanic Clouds, the two largest satellite galaxies of the Milky Way, appear to be connected by a bridge stretching across 43,000 light years, according to an international team of astronomers… …

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MIT Physicists Present Strong Demonstration of Quantum Entanglement

Quantum entanglement may appear to be closer to science fiction than anything in our physical reality. But according to the laws of quantum mechanics — a branch of physics that describes the world at… …

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Experiment Reaffirms Quantum Weirdness

Physicists are closing the door on an intriguing loophole around the quantum phenomenon Einstein called “spooky action at a distance.” …

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Bohr’s quantum theory revised

Bohr’s atomic model was utterly revolutionary when it was presented in 1913 but, although it is still taught in schools, it became obsolete decades ago. However, its creator also developed a much wider-ranging and less known quantum theory, the principles of which changed over time. Researchers have now analyzed the development in the Danish physicist’s thought – a real example of how scientific theories are shaped.

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Many-body quantum interference on hypercubes

Beyond the regime of distinguishable particles, many-body quantum interferences influence quantum transport in an intricate manner. However, symmetries of the single-particle transformation matrix alleviate this complexity and even allow the analytic formulation of suppression laws, which predict final states to occur with a vanishing probability due to total destructive interference. Here we investigate the symmetries of hypercube graphs and their generalisations with arbitrary identical subgraphs on all vertices. We find that initial many-particle states, which are invariant under self-inverse symmetries of the hypercube, lead to a large number of suppressed final states. The condition for suppression is determined solely by the initial symmetry, while the fraction of suppressed states is given by the number of independent symmetries of the initial state. Our findings reveal new insights into particle statistics for ensembles of indistinguishable bosons and fermions and may re… …

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Protecting quantum computing networks against hacking threats

As we saw during the 2016 US election, protecting traditional computer systems, which use zeros and ones, from hackers is not a perfect science. Now consider the complex world of quantum computing, where bits of information can simultaneously hold multiple states beyond zero and one, and the potential threats become even trickier to tackle. Researchers have uncovered clues that could help administrators protect quantum computing networks from external attacks.

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Researchers transmit 10 bit of information with a single photon

Researchers have managed to transmit more than 10 bit of information with a single photon. They achieved this using an ingenious method for detecting individual photons. The knowledge gained from this study can be used to improve the security and speed of quantum communication.

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