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  • News

    A new quantum device defies the concepts of ‘before’ and ‘after’

    One thing leads to another. It sounds obvious, but in the quantum realm, the saying doesn’t always ring true. A new quantum device can jumble up a sequence of two events so that they take place in both orders simultaneously, researchers report in a paper in press in Physical Review Letters.

    “In everyday life, we are used to thinking of events having a definite order,” says physicist...

    08/23/2018 - 07:00 Quantum Physics
  • News

    Designer diamonds could one day help build a quantum internet

    A new kind of artificial diamond is a cut above the rest for quantum memory.

    Unlike other synthetic diamonds, which could either store quantum information for a long time or transmit it clearly, the new diamond can do both. This designer crystal, described in the July 6 Science, could be a key building block in a quantum internet. Such a futuristic communications network would allow...

    07/06/2018 - 11:43 Materials, Quantum Physics, Technology
  • News

    Mini machines can evade friction by taking quantum shortcuts

    SANTA BARBARA, Calif. — To evade friction, try taking a quantum shortcut.

    Two teams of physicists are building tiny machines designed to operate with the maximum possible efficiency. According to thermodynamics, there’s an ultimate limit to the efficiency of machines known as heat engines — including steam engines and car engines — which convert heat into motion or other types of energy...

    06/29/2018 - 15:21 Quantum Physics
  • News

    A tiny version of this physics toy is revealing quantum secrets

    SANTA BARBARA, Calif. — A simple toy is helping scientists understand new details of a mysterious quantum process.

    The rhythmic click-clacking of the metal balls in Newton’s cradle has long entertained physics students. Now, scientists have re-created the toy on an atomic scale, using it to probe how quantum systems reach a balanced state known as thermal equilibrium.

    Leave a mug...

    06/28/2018 - 11:03 Quantum Physics
  • Science Ticker

    Split atom clouds get entangled in quantum tests

    Clouds of linked-up atoms are doing the splits.

    Scientists forged quantum connections between separate regions within clouds of ultracold atoms, demonstrating entanglement between thousands of particles in two different locations. Previous similar experiments had entangled several thousand atoms, but only within one entire cloud (SN Online: 3/25/15).

    Now researchers have split up a...

    04/26/2018 - 14:00 Quantum Physics
  • News

    Spooky quantum entanglement goes big in new experiments

    Quantum entanglement has left the realm of the utterly minuscule, and crossed over to the just plain small. Two teams of researchers report that they have generated ethereal quantum linkages, or entanglement, between pairs of jiggling objects visible with a magnifying glass or even the naked eye — if you have keen vision.

    Physicist Mika Sillanpää and colleagues entangled the motion of...

    04/25/2018 - 13:00 Quantum Physics