Keyword: quantummechanics

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  • Physicists Entangle Two Macroscopic-Scale Objects [Apr 2018]

    08/08/2018 2:58:41 PM PDT · by ETL · 32 replies
    Sci-News.com ^ | Apr 30, 2018 | News Staff / Source
    “Harnessing the mysterious property that Albert Einstein called ‘spooky action at a distance’ is a crucial step toward exploiting quantum quirks for technology such as new kinds of sensors or computers,” the physicists said. “Entanglement is not just some academic curiosity; it’s also something you can harness as a basis for doing useful things with quantum mechanics,” Professor Clerk added. Entangled states are typically extremely fragile — especially so when they involve large objects. So Professor Clerk and his colleague, Dr. Matt Woolley from the University of New South Wales, developed a theoretical proposal for how to keep the motion...
  • Coming to Grips with the Implications of Quantum Mechanics

    06/02/2018 5:57:58 AM PDT · by BenLurkin · 74 replies
    Scientific American ^ | May 29, 2018 | Bernardo Kastrup, Henry P. Stapp, Menas C. Kafatos on
    For almost a century, physicists have wondered whether the most counterintuitive predictions of quantum mechanics (QM) could actually be true. Only in recent years has the technology necessary for answering this question become accessible, enabling a string of experimental results—including startling ones reported in 2007 and 2010, and culminating now with a remarkable test reported in May—that show that key predictions of QM are indeed correct. Taken together, these experiments indicate that the everyday world we perceive does not exist until observed, which in turn suggests—as we shall argue in this essay—a primary role for mind in nature. It is...
  • Here's the Weird Science Launching to the Space Station on Monday

    05/18/2018 6:37:52 PM PDT · by BenLurkin · 7 replies
    Space.com ^ | May 18, 2018 11:12am ET | Chelsea Gohd, Staff Writer |
    On Monday, a cargo delivery to the International Space Station will carry old-fashioned sextants, E. colibacteria and lasers that will create a temperature 10 billion times colder than the vacuum of space. … CAL is sending the space station an experimental physics package that holds an "ice chest"-like compartment filled with lasers and electronics; the interior will be able to reach a temperature10 billion times colder than the vacuum of space, according to a NASA statement. Within this instrument, the researchers will use laser cooling techniques and magnets to slow down atoms until they are almost entirely motionless. By studying...
  • The Difficult Birth of the "Many Worlds" Interpretation of Quantum Mechanics

    03/26/2018 9:56:53 AM PDT · by LibWhacker · 40 replies
    Scientific American ^ | 3/21/18 | Adam Becker
    The Difficult Birth of the "Many Worlds" Interpretation of Quantum Mechanics Hugh Everett, creator of this radical idea during a drunken debate more than 60 years ago, died before he could see his theory gain widespread popularity   By Adam Becker on March 21, 2018 Share on Facebook Share on Twitter Share on Reddit Email Print Share via Google+Stumble Upon Credit: Garik Barseghyan Pixabay Over several rounds of sherry late one night in the fall of 1955, the Danish physicist Aage Petersen debated the mysteries at the heart of quantum physics with two graduate students, Charles Misner and Hugh Everett, at Princeton University. Petersen was defending the...
  • Light’s weird dual nature weathers trip to space and back

    10/29/2017 4:12:12 PM PDT · by ETL · 21 replies
    ScienceNews.com ^ | October 25, 2017 | Emily Conover
    'Delayed-choice' test, a first with spacefaring photons, affirms light can behave like a wave or a particle. Light is two-faced: Sometimes it behaves like a wave, sometimes like a particle. Now, scientists have shown that light’s shifty disposition persists even after trekking thousands of kilometers into space and back again, researchers report October 25 in Science Advances.Depending on how light is measured, it can either be particle-like, lighting up a camera pixel, for example, or wavelike, interfering with other waves like ripples on the surface of water. It’s one of the many oddities of quantum mechanics. Before light is measured,...
  • Scientists Are About to Perform an Experiment to See if The Human Mind Is Bound by Physics

    05/25/2017 8:02:24 PM PDT · by Ciaphas Cain · 75 replies
    Science Alert ^ | May 25, 2017 | Dom Galeon
    Perhaps one of the most intriguing and interesting phenomena in quantum physics is what Einstein referred to as a "spooky action at a distance" - also known as quantum entanglement. This quantum effect is behind what makes quantum computers work, as quantum bits (qubits) generally rely on entanglement to process data and information. It's also the working theory behind the possibility of quantum teleportation. The long and short of it is this: entangled particles affect one another regardless of distance, where a measurement of the state of one would instantly influence the state of the other. However, it remains "spooky"...
  • THIS Is The Smartest Kid In The World And He Thinks CERN Destroyed Our Universe…

    04/24/2017 2:12:25 PM PDT · by Ciaphas Cain · 187 replies
    Life Coach Code ^ | April 22, 2017
    We are living inside a Universe that’s so complex that if we can grasp what’s happening for a moment, we’ll fall down on our knees and cry in surrender to its marvelous beauty! Science just barely starts to scratch the surface to the nature of reality and still, its discoveries are more shocking than we were able to imagine. It proves of quantum entanglement, unified field of consciousness, free energy, superhuman abilities, singularity, parallel universes and alternate realities. All of this is so mind boggling that you would never think a kid can understand. But maybe we need a kid,...
  • Time travellers could use parallel dimensions to visit the past, scientists claim

    12/24/2016 2:25:43 PM PST · by ETL · 103 replies
    The Sun UK ^ | November 28, 2016 | GEORGE HARRISON
    Physicists reveal sensational findings which could allow science fiction dreams to become reality Professor Howard Wiseman and Dr Michael Hall, from Griffith University’s Centre for Quantum Dynamics, claim that the idea of parallel universes is more than just science fiction. Fellow researcher Dr Dirk-Andre Deckert, from the University of California, helped further the researchers’ theory, which goes against almost all conventional understanding of space and time. If there really are multiple, interacting universes, then it would be possible for time travellers to visit Earth, and every imaginable scenario would be played out in a parallel universe at some point. The...
  • Why quantum mechanics might need an overhaul

    11/26/2016 6:19:48 PM PST · by TigerLikesRooster · 61 replies
    Science News ^ | November 4, 2016 | Tom Siegfried
    Why quantum mechanics might need an overhaul by Tom Siegfried 3:37pm, November 4, 2016 Nobel laureate Steven Weinberg says current debates suggest need for new approach to comprehend reality SAN ANTONIO ? Quantum mechanics is science’s equivalent of political polarization. Voters either take sides and argue with each other endlessly, or stay home and accept politics as it is. Physicists either just accept quantum mechanics and do their calculations, or take sides in the never-ending debate over what quantum mechanics is actually saying about reality. Steven Weinberg used to be happy with quantum mechanics as it is and didn’t worry...
  • Schrödinger's cat lives and dies in two boxes at once

    05/27/2016 11:17:02 AM PDT · by C19fan · 39 replies
    Physics World ^ | May 27, 2016 | Staff
    Schrödinger's cat now has a second box to play in, thanks to an international team of physicists that has created a two-mode "Schrödinger's cat state" for the first time. The experiment brings together two purely quantum properties, in that the "cat" (i.e. the photons) is simultaneously "alive and dead" (in a superposition of states) while also in two locations at once (the two boxes are entangled with one another).
  • New Support for Alternative Quantum View

    05/17/2016 11:13:33 AM PDT · by Reeses · 30 replies
    Quanta Magazine ^ | May 16, 2016 | Dan Falk
    An experiment claims to have invalidated a decades-old criticism against pilot-wave theory, an alternative formulation of quantum mechanics that avoids the most baffling features of the subatomic universe. Of the many counterintuitive features of quantum mechanics, perhaps the most challenging to our notions of common sense is that particles do not have locations until they are observed. This is exactly what the standard view of quantum mechanics, often called the Copenhagen interpretation, asks us to believe. Instead of the clear-cut positions and movements of Newtonian physics, we have a cloud of probabilities described by a mathematical structure known as a...
  • Bizarre fourth state of water discovered

    04/28/2016 6:22:09 AM PDT · by Hostage · 56 replies
    gizmag ^ | April 26, 2016 | Michael Franco
    You already know that water can have three states of matter: solid, liquid and gas. But scientists at the Oak Ridge National Lab (ORNL) have discovered that when it's put under extreme pressure in small spaces, the life-giving liquid can exhibit a strange fourth state known as tunneling. The water under question was found in super-small six-sided channels in the mineral beryl, which forms the basis for the gems aquamarine and emerald. The channels measure only about five atoms across and function basically as cages that can each trap one water molecule. What the researchers found was that in this...
  • Physicists propose the first scheme to teleport the memory of an organism

    01/15/2016 3:07:48 PM PST · by presidio9 · 51 replies
    Phys.org ^ | January 14, 2016
    In "Star Trek," a transporter can teleport a person from one location to a remote location without actually making the journey along the way. Such a transporter has fascinated many people. Quantum teleportation shares several features of the transporter and is one of the most important protocols in quantum information. In a recent study, Prof. Tongcang Li at Purdue University and Dr. Zhang-qi Yin at Tsinghua University proposed the first scheme to use electromechanical oscillators and superconducting circuits to teleport the internal quantum state (memory) and center-of-mass motion state of a microorganism. They also proposed a scheme to create a...
  • Researchers have written quantum code on a silicon chip for the first time

    11/17/2015 6:53:19 PM PST · by LibWhacker · 28 replies
    Science alert ^ | 11/17/15 | FIONA MACDONALD
    Researchers have written quantum code on a silicon chip for the first time And so it begins... FIONA MACDONALD 17 NOV 2015           For the first time, Australian engineers have demonstrated that they can write and manipulate the quantum version of computer code on a silicon microchip. This was done by entangling two quantum bits with the highest accuracy ever recorded, and it means that we can now start to program for the super-powerful quantum computers of the future.Engineers code regular computers using traditional bits, which can be in one of two states: 1 or 0. Together, two bits...
  • The first ever photograph of light as both a particle and wave

    03/02/2015 12:52:37 PM PST · by C19fan · 28 replies
    Light behaves both as a particle and as a wave. Since the days of Einstein, scientists have been trying to directly observe both of these aspects of light at the same time. Now, scientists at EPFL have succeeded in capturing the first-ever snapshot of this dual behavior. Quantum mechanics tells us that light can behave simultaneously as a particle or a wave. However, there has never been an experiment able to capture both natures of light at the same time; the closest we have come is seeing either wave or particle, but always at different times. Taking a radically different...
  • Photon interaction breakthrough

    11/03/2014 5:56:03 PM PST · by BenLurkin · 27 replies
    piercepioneer.com ^ | 11-3-14 | Deborah Grace
    Photons generally do not interact with each other in free space but instead one passes through the other with no effect to either one. Vienna University of Technology researchers have made a significant and groundbreaking discovery in the field of quantum mechanics. A team of researchers has developed some unique hardware, which enable photons to interact. This hardware is composed of micro-thin fiber made of glass, which in turn attached to a device called a resonator. The photon particle light can enter the resonator, moves in a circular fashion and then returns to the glass fiber. This change in pathways...
  • Our quantum problem

    09/29/2014 4:34:42 PM PDT · by LibWhacker · 46 replies
    Aeon ^ | 1/28/14 | Adrian Kent
    In 1909, Ernest Rutherford, Hans Geiger and Ernest Marsden took a piece of radium and used it to fire charged particles at a sheet of gold foil. They wanted to test the then-dominant theory that atoms were simply clusters of electrons floating in little seas of positive electrical charge (the so-called ‘plum pudding’ model). What came next, said Rutherford, was ‘the most incredible event that has ever happened to me in my life’. Despite the airy thinness of the foil, a small fraction of the particles bounced straight back at the source – a result, Rutherford noted, ‘as incredible as...
  • Schrödinger's cat caught on quantum film

    08/27/2014 7:37:18 PM PDT · by Sparklite · 68 replies
    New Scientist ^ | 27 August 2014 | Penny Sarchet
    Schrödinger's cat is the poster child for quantum weirdness. Now it has been immortalised in a portrait created by one of the theory's strangest consequences: quantum entanglement. These images were generated using a cat stencil and entangled photons. The really spooky part is that the photons used to generate the image never interacted with the stencil, while the photons that illuminated the stencil were never seen by the camera.
  • Fluid Tests Hint at Concrete Quantum Reality

    06/25/2014 10:17:27 AM PDT · by Reeses · 16 replies
    Quanta Magazine ^ | June 24, 2014 | Natalie Wolchover
    For nearly a century, “reality” has been a murky concept. The laws of quantum physics seem to suggest that particles spend much of their time in a ghostly state, lacking even basic properties such as a definite location and instead existing everywhere and nowhere at once. Only when a particle is measured does it suddenly materialize, appearing to pick its position as if by a roll of the dice. This idea that nature is inherently probabilistic — that particles have no hard properties, only likelihoods, until they are observed — is directly implied by the standard equations of quantum mechanics....
  • Scientists achieve reliable quantum teleportation for first time

    05/29/2014 5:34:05 PM PDT · by SeekAndFind · 75 replies
    C/NET ^ | 05/29/2014 | Nick Statt
    Albert Einstein once told a friend that quantum mechanics doesn't hold water in his scientific world view because "physics should represent a reality in time and space, free from spooky actions at a distance." That spooky action at a distance is entanglement, a quantum phenomenon in which two particles, separated by any amount of distance, can instantaneously affect one another as if part of a unified system. Now, scientists have successfully hijacked that quantum weirdness -- doing so reliably for the first time -- to produce what many sci-fi fans have long dreamt up: teleportation. No, not beaming humans aboard...