Quantum Physics

Quantum Physics News -- ScienceDaily News on quantum physics. Read current research on everything from quantum mechanics to quantum dots. Was Albert Einstein right?

  • The photoelectric effect in stereo
    on June 22, 2018 at 9:48 pm

    In the photoelectric effect, a photon ejects an electron from a material. Researchers have now used attosecond laser pulses to measure the time evolution of this effect in molecules. From their results they can deduce the exact location of a photoionization event. […]

  • Einstein proved right in another galaxy
    on June 21, 2018 at 6:10 pm

    Astronomers have made the most precise test of gravity outside our own solar system. By combining data taken with NASA's Hubble Space Telescope and the European Southern Observatory's Very Large Telescope, the researchers show that gravity in this galaxy behaves as predicted by Albert Einstein's general theory of relativity, confirming the theory's validity on galactic scales. […]

  • Better model of water under extreme conditions could aid understanding of Earth's mantle
    on June 20, 2018 at 8:24 pm

    A team of scientists ran quantum simulations to develop a new model of the behavior of water at extremely high temperatures and pressures. The computational measurements should help scientists understand water's role in the makeup of the mantle and potentially in other planets. […]

  • Gas flow through tiny atonically flat walls: Atomic-scale ping-pong
    on June 20, 2018 at 7:02 pm

    New experiments have shed more light on the gas flow through tiny, angstrom-sized channels with atomically flat walls. […]

  • Quantum step forward in protecting communications from hackers
    on June 20, 2018 at 4:59 pm

    Researchers have shown that a new quantum-based procedure for distributing secure information along communication lines could be successful in preventing serious security breaches. […]

  • Interaction of paired and lined-up electrons can be manipulated in semiconductors
    on June 20, 2018 at 4:59 pm

    The way that electrons paired as composite particles or arranged in lines interact with each other within a semiconductor provides new design opportunities for electronics, according to recent findings. […]

  • Modern laser science brightened by 2,300-year-old technology
    on June 20, 2018 at 4:59 pm

    Scientists have harnessed a 2,300-year-old water displacement technology to develop a novel laser beam that traps and moves particles in specific directions. It is a significant contribution to the future of both basic and applied science. […]

  • Mysterious event may be caused by a tau neutrino
    on June 19, 2018 at 4:25 pm

    Theoretical physicists calculate the origin of a high-energy particle track captured by the IceCube Neutrino Observatory. […]

  • When photons spice up the energy levels of quantum particles
    on June 19, 2018 at 4:24 pm

    For the first time, a team of mathematical physicists, call upon supersymmetry to explain the behavior of particles that have received a photon and are subjected to particular potential energies known as shape-invariant potentials. […]

  • Carbon nanotube optics provide optical-based quantum cryptography and quantum computing
    on June 19, 2018 at 2:24 am

    Researchers are exploring the enhanced potential of carbon nanotubes as single-photon emitters for quantum information processing. […]

  • Quantum transfer at the push of a button
    on June 15, 2018 at 1:37 am

    In the new quantum information technologies, fragile quantum states have to be transferred between distant quantum bits. Researchers have now realized such a quantum transmission between two solid-state qubits at the push of a button. […]

  • Core electron topologies in chemical bonding
    on June 12, 2018 at 10:51 pm

    Researchers resolve the age-old mystery of why silicon cannot replace carbon in organic compounds. A new benchmark quantum chemical calculation of C2, Si2, and their hydrides for the first time reveals a qualitative difference in the topologies of core electron orbitals of organic molecules and their silicon analogues. Other elements with a similar propensity as carbon to reshape their core electron nodal structures upon chemical bonding are proposed. […]

  • Physicists discover how to create the thinnest liquid films ever
    on June 12, 2018 at 2:57 pm

    Physicists have discovered a fundamentally new way surfaces can get wet. Their study may allow scientists to create the thinnest films of liquid ever made -- and engineer a new class of surface coatings and lubricants just a few atoms thick. […]

  • Evidence for a new property of quantum matter revealed
    on June 11, 2018 at 9:24 pm

    A theorized but never-before detected property of quantum matter has now been spotted in the lab. […]

  • A better device for measuring electromagnetic radiation
    on June 11, 2018 at 5:34 pm

    Researchers have developed a better bolometer, a device for measuring electromagnetic radiation. The new technology is faster, simpler, and covers more wavelengths. […]

  • Designing a better superconductor with geometric frustration
    on June 11, 2018 at 5:33 pm

    Study shows a magnet-controlled 'switch' in superconductor configuration provides unprecedented flexibility in managing the location of vortex filaments, altering the properties of the superconductor. […]

  • Silicon provides means to control quantum bits for faster algorithms
    on June 9, 2018 at 12:01 am

    Quantum bits are now easier to manipulate for devices in quantum computing, thanks to enhanced spin-orbit interaction in silicon. […]

  • Cooling by laser beam
    on June 8, 2018 at 2:19 pm

    A laser pulse that for a few picoseconds transforms a material into a high-temperature superconductor. Different experiments have unveiled this interesting phenomenon, with potential applicative implications. Research carried out by scientists a year ago had already provided several basic principles of the phenomenon. […]

  • Scientists go deep to quantify perovskite properties
    on June 8, 2018 at 1:36 pm

    Scientists have discovered properties in naturally occurring solution-processed quantum wells that are likely to impact the growing field of low-cost perovskite based optoelectronics. They created a general scaling law that researchers can use to determine how to tune the electronic properties of 2D perovskite-based materials for devices. […]

  • Study develops a model enhancing particle beam efficiency
    on June 7, 2018 at 4:07 pm

    Inspired by tokamaks, researchers create via computer simulation an alternative for better control, in accelerators, of the particles' chaotic trajectories. […]

  • Single molecular insulator pushes boundaries of current state of the art
    on June 6, 2018 at 5:27 pm

    Researchers have synthesized the first molecule capable of insulating at the nanometer scale more effectively than a vacuum barrier. The team's insight was to exploit the wave nature of electrons. By designing an extremely rigid silicon-based molecule under 1 nm in length that exhibited comprehensive destructive interference signatures, they devised a novel technique for blocking tunnelling conduction. This new design principle has the potential to support continued miniaturization of classic transistors in the near term. […]

  • Seeing the light? Study illuminates how quantum magnets mimic light
    on June 6, 2018 at 1:53 pm

    What is light? It sounds like a simple question, but it is one that has occupied some of the best scientific minds for centuries. […]

  • Mono-energetic neutrinos with enough energy to produce a muon
    on June 5, 2018 at 9:25 pm

    Scientists recently reexamined data from the MiniBooNE experiment at Fermilab taken between 2009 and 2011, and they found the first direct evidence of mono-energetic neutrinos, or neutrinos with definite energy, that are energetic enough to produce a muon. […]

  • Transferring quantum information using sound
    on June 5, 2018 at 3:21 pm

    Scientists have found a new way to transfer quantum information. They propose using tiny mechanical vibrations. The atoms are coupled with each other by 'phonons' -- the smallest quantum mechanical units of vibrations or sound waves. […]

  • Detecting the birth and death of a phonon
    on June 5, 2018 at 3:21 pm

    Physicists have developed a new technique to probe elementary quantum excitations of atomic vibrations inside a diamond crystal under ambient conditions. The technique uses ultra-short laser pulses and detectors sensitive to single photons. […]

  • Physicists use terahertz flashes to uncover state of matter hidden by superconductivity
    on June 4, 2018 at 7:54 pm

    A research team has developed a new quantum switching scheme that gives them access to new and hidden states of matter. If researchers can learn to control the hidden state, further stabilize it and determine whether it's suitable for quantum logic operations, it could allow researchers to use it for quantum computing and other practical functions. […]

  • Spooky quantum particle pairs fly like weird curveballs
    on June 4, 2018 at 4:49 pm

    Some particles that can be in two places at the same time and are not just particles but also waves, in this case, fermions, appear to move in even weirder ways than previously thought. Theoretical physicists applied extreme computing power for a week to predict the movements of fermions by including quantum optics, or light-like, ideas in their mathematical, theoretical modeling. […]

  • Findings could spur energy-saving electronics, quantum computing
    on June 4, 2018 at 4:48 pm

    Physicists has demonstrated a way to conduct electricity between transistors without energy loss, opening the door to low-power electronics and, potentially, quantum computing that would be far faster than today's computers. Their findings involved using a special mix of materials with magnetic and insulator properties. […]

  • Direct coupling of the Higgs boson to the top quark observed
    on June 4, 2018 at 4:48 pm

    An observation made by the CMS experiment at CERN unambiguously demonstrates the interaction of the Higgs boson and top quarks, which are the heaviest known subatomic particles. This major milestone is an important step forward in our understanding of the origins of mass. […]

  • Atomic clock comparison confirms key assumptions of 'Einstein's elevator'
    on June 4, 2018 at 3:26 pm

    By comparing different types of remote atomic clocks, physicists have performed the most accurate test ever of a key principle underlying Albert Einstein's famous theory of general relativity, which describes how gravity relates to space and time. […]