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  • IBM's quantum computer
Your search has returned 135 articles:
  • News

    ‘Arrow of time’ reversed in quantum experiment

    Your lukewarm cup of coffee won’t suddenly heat itself up, no matter how long you put off the trek to the microwave. But the same rule doesn’t necessarily apply to quantum systems. Like chilly air warming a mug, heat can spontaneously flow from a cold quantum particle to a hotter one under certain conditions, researchers report November 10 at arXiv.org. This phenomenon seems to reverse the “...

    11/27/2017 - 07:00 Quantum Physics
  • Science Ticker

    Quantum computers take a step forward with a 50-qubit prototype

    Bit by qubit, scientists are edging closer to the realm where quantum computers will reign supreme.

    IBM is now testing a prototype quantum processor with 50 quantum bits, or qubits, the company announced November 10. That’s around the number needed to meet a sought-after milestone: demonstrating that quantum computers can perform specific tasks that are beyond the reach of traditional...

    11/10/2017 - 09:00 Quantum Physics, Computing
  • News in Brief

    Quantum computing steps forward with 50-qubit prototype

    Bit by qubit, scientists are edging closer to the realm where quantum computers will reign supreme.

    IBM is testing a prototype quantum processor with 50 quantum bits, or qubits, the company announced November 10. That’s about the number needed to meet a sought-after milestone: demonstrating that quantum computers can perform specific tasks that are beyond the reach of traditional...

    11/10/2017 - 09:00 Quantum Physics, Computing
  • News

    Photons are caught behaving like superconducting electrons

    Light is a fan of the buddy system. Photons, or particles of light, have been spotted swapping energy with partners. This chummy behavior resembles how electrons pair up in materials that conduct current without resistance, known as superconductors, researchers report in a paper accepted in Physical Review Letters.

    Although the photons exchange energy like electrons do, it’s unknown...

    10/30/2017 - 15:21 Condensed Matter, Quantum Physics
  • News in Brief

    Light’s weird dual nature weathers trip to space and back

    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...

    10/25/2017 - 14:00 Quantum Physics, Physics
  • Context

    Quantum mysteries dissolve if possibilities are realities

    When you think about it, it shouldn’t be surprising that there’s more than one way to explain quantum mechanics. Quantum math is notorious for incorporating multiple possibilities for the outcomes of measurements. So you shouldn’t expect physicists to stick to only one explanation for what that math means. And in fact, sometimes it seems like researchers have proposed more “interpretations” of...

    10/01/2017 - 07:00 Quantum Physics
  • News

    Quantum video chat links scientists on two different continents

    Hackers, take notice: Ultrasecure quantum video chats are now possible across the globe.

    In a demonstration of the world’s first intercontinental quantum link, scientists held a long-distance videoconference on September 29 between Austria and China. To secure the communication, a Chinese satellite distributed a quantum key, a secret string of numbers used to encrypt the video...

    09/29/2017 - 17:07 Quantum Physics
  • News

    A new test of water ripples supports the idea of quantum heat in a vacuum

    Empty space might feel hot to a traveler zipping through at a rapidly increasing clip — or so some physicists predict. And a new experiment provides a hint that they might be right.

    That idea, known as the Unruh effect, seems to be supported by an analogous effect that appears in a tank of rippling water. Patterns in the waves, when analyzed as if seen by an accelerating observer, appear...

    09/18/2017 - 07:00 Quantum Physics
  • News

    Minuscule jitters may hint at quantum collapse mechanism

    A tiny, shimmying cantilever wiggles a bit more than expected in a new experiment. The excess jiggling of the miniature, diving board–like structure might hint at why the strange rules of quantum mechanics don’t apply in the familiar, “classical” world. But that potential hint is still a long shot: Other sources of vibration are yet to be fully ruled out, so more experiments are needed.

    ...

    09/01/2017 - 11:05 Quantum Physics
  • News

    Tiny quantum storage device fits on a chip

    A newfangled data storage device, which takes up less than a millionth the amount of space of its predecessors, could be a key component of futuristic communication systems.

    Scientists fashioned a tiny crystal that stores snippets of quantum information — which unlike computer data “bits” that come only in 0s and 1s, can also exist as both 0 and 1 simultaneously. This crystal is the...

    08/31/2017 - 14:00 Technology, Quantum Physics