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annaheffernan

Highly accurate quantum accelerometers - 5 views

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    Their accuracy is orders of magnitude better than what is currently being used, however at the moment, it sounds like quite a large setup -> they're working on getting it down to 1m^3 :o, still any gravity mapping instruments could benefit from these in the future.
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    Actually GPS is much more accurate, but as it doesnt work under water, the only alternative (without building an underwater GPS equivalent using probes) is to use cumulative accelerometer data. But as this is prone to drifting over time, quantum systems like this can help improving the accuracy significantly.
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    Very true :). I was thinking though when you want to remove 'noise' from any gravity mapping experiment, highly accurate accelerometers are required, like those used in GOCE.
jcunha

Quantum machine learning - 1 views

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    Quantum Computing and Machine Learning in the same sentence. The association started to be put forward by Google and NASA playing with D-WAVE computers. Meanwhile in the academic media, https://journals.aps.org/prx/pdf/10.1103/PhysRevX.4.031002
jcunha

Automated Search for new Quantum Experiments - 0 views

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    "Here we report the development of the computer algorithm Melvin which is able to find new experimental implementations for the creation and manipulation of complex quantum states." Published in Physical Review Letters. Researchers target future use more artificial intelligence algorithms, such as reinforcement learning techniques.
Paul N

New derivation of pi links quantum physics and pure math - 5 views

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    In 1655 the English mathematician John Wallis published a book in which he derived a formula for pi as the product of an infinite series of ratios. Now researchers from the University of Rochester, in a surprise discovery, have found the same formula in quantum mechanical calculations of the energy levels of a hydrogen atom.
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    This is insanity, Max. Or maybe it's genius.
Dario Izzo

Quantum teleportation between remote atomic-ensemble quantum memories - 1 views

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    1mm atomic bundle teleported !!!!
johannessimon81

Tiny Quantum Refrigerator Has Super Cooling Power - 0 views

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    Solid state tunnel junction can cool "payload" to sub-Kelvin temperatures. This would be much more convenient than for example helium3-helium4 mixing. Proposed use for cooling sensors on spacecraft - could extend lifetime of satellites like ESA's about to switched off Herschel almost indefinitely.
LeopoldS

Physicists twist water into knots : Nature News & Comment - 3 views

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    More than a century after the idea was first floated, physicists have finally figured out how to tie water in knots in the laboratory. The gnarly feat, described today in Nature Physics1, paves the way for scientists to experimentally study twists and turns in a range of phenomena - ionized gases like that of the Sun's outer atmosphere, superconductive materials, liquid crystals and quantum fields that describe elementary particles.

    Lord Kelvin proposed that atoms were knotted "vortex rings" - which are essentially like tornado bent into closed loops and knotted around themselves, as Daniel Lathrop and Barbara Brawn-Cinani write in an accompanying commentary. In Kelvin's vision, the fluid was the theoretical 'aether' then thought to pervade all of space. Each type of atom would be represented by a different knot.

    Related stories
    Solar magnetism twists braids of superheated gas
    Electron microscopy gets twisted
    Topological insulators: Star material
    More related stories
    Kelvin's interpretation of the periodic table never went anywhere, but his ideas led to the blossoming of the mathematical theory of knots, part of the field of topology. Meanwhile, scientists also have come to realize that knots have a key role in a host of physical processes.
santecarloni

The Higgs, Boltzmann Brains, and Monkeys Typing Hamlet | The Crux | Discover Magazine - 7 views

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    good luck with this....
  • ...3 more comments...
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    Nice article, actually! It summarizes in "human readable format" why and how too many cosmologists and string theorists just went bozo...
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    really ! this article should go for the ignobels ! http://arxiv.org/abs/0808.3778 I wonder which substance theorists are taking... I will avoid...! but really this is very preoccupating: "complex structures will occasionally emerge from the vacuum as quantum fluctuations, at a small but nonzero rate per unit spacetime volume. An intelligent observer, like a human, could be one such structure." Is this a new alternative to Darwinism...??? a support to creationism ?? How can a physicist can write such non-sense ?
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    and this is published in PRD !!!
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    In 1996 Sokal hoaxed sociologists with his famous nonsense text on political implications of quantum gravity. Can one play a similar game with "researchers" on Boltzmann brains, multiverses, string landscapes or similar? I doubt, this is just reality satire that can't be topped.
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    Poor Boltzmann ...
zoervleis

Photonic multilayer structure of Begonia chloroplasts enhances photosynthetic efficiency - 3 views

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    "You won't believe this one weird quantum mechanical trick Begonia uses!"
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    If I remember correctly there was a presentation at the ACT in 2014(?) about the quantum-mechanical effects essential to photosynthesis by an external speaker.
jaihobah

Saturday Morning Breakfast Cereal - The Talk - 1 views

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    Quantum mechanics PSA
santecarloni

Chinese Physicists Smash Distance Record For Teleportation  - Technology Review - 1 views

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    The ability to teleport photons through 100 kilometres of free space opens the way for satellite-based quantum communications, say researchers
LeopoldS

Demonstration of Blind Quantum Computing - 0 views

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    Another Zeilinger article in science
santecarloni

New 2D semiconductor could outperform silicon - physicsworld.com - 1 views

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    A new class of 2D semiconductor has been developed by researchers in the US. The free-standing quantum membranes, which are made of indium arsenide (InAs) and are just a few layers thick, have properties that are in stark contrast to the semiconductor layers used in conventional transistors.
jmlloren

NASA Quantum Future Technologies Conference - 1 views

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    Videos included
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    One thing is certain, the name of the conference is ubercool.
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