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?

  • Enhancing the sensing capabilities of diamonds with quantum properties
    on September 22, 2017 at 4:29 pm

    When a nitrogen atom is next to the space vacated by a carbon atom, it forms what is called a nitrogen-vacancy center. Now, researchers have shown how they can create more NV centers, which makes sensing magnetic fields easier, using a relatively simple method that can be done in many labs. […]

  • Quantum teleportation of patterns of light
    on September 21, 2017 at 4:11 pm

    Researchers have demonstrated entanglement swapping and teleportation of orbital angular momentum 'patterns' of light. This is a crucial step towards realizing a quantum repeater for high-dimensional entangled states. […]

  • One-way track for microwaves based on mechanical interference
    on September 19, 2017 at 4:31 pm

    Researchers use interference in the motion of a micrometer-size drum to route microwave signals in a single direction. […]

  • Cost effective quantum moves a step closer
    on September 19, 2017 at 2:26 pm

    Researchers have taken an important step towards enabling quantum networks to be cost-effective and truly secure from attack. The experiments prove the viability of a measurement-device-independent quantum key distribution (QKD) system, based on readily available hardware. […]

  • Optical, electrical bistability study sheds light on next-gen high speed data transfer
    on September 19, 2017 at 3:22 am

    Today, electrical bistable devices are the foundation of digital electronics, serving as building blocks of switches, logic gates and memories in computer systems. However, the bandwidth of these electronic computers is limited by the signal delay of time constants important to electronic logic operations. In an attempt to mitigate these problems, scientists have considered the development of an optical digital computer, and one team has gone so far as to demonstrate the optical and electrical bistability for switching in a single transistor. […]

  • New quantum phenomena in graphene superlattices
    on September 18, 2017 at 4:36 pm

    Researchers have just shown the first new type of quantum oscillation to be reported for thirty years. It is the first of its kind to be present at high temperature and on the mesoscale and sheds light on the Hofstadter butterfly phenomenon. […]

  • Physicists discover a tri-anion particle with colossal stability
    on September 18, 2017 at 4:35 pm

    Chemists have created the most stable tri-anion particle currently known to science. A tri-anion particle is a combination of atoms that contains three more electrons than protons. This discovery is novel because previously known tri-anion particles were unstable due to their numerical imbalance. […]

  • A new approach to ultrafast light pulses
    on September 18, 2017 at 4:35 pm

    A team of researchers has found a new way of producing high-speed pulses of light using two-dimensional molecular aggregates, which could enable new photonic devices such as optically based microchips. […]

  • New evidence for small, short-lived drops of early universe quark-gluon plasma?
    on September 18, 2017 at 1:30 pm

    Particles emerging from even the lowest energy collisions of small deuterons with large heavy nuclei at the Relativistic Heavy Ion Collider exhibit behavior scientists associate with the formation of a soup of quarks and gluons, the fundamental building blocks of nearly all visible matter. […]

  • Ultrafast snapshots of relaxing electrons in solids
    on September 15, 2017 at 8:37 pm

    A team of scientists has been able to capture the dynamics of core-excitons in solids in real-time. […]

  • The beam of invisibility
    on September 13, 2017 at 2:45 pm

    A new idea for a cloaking technology has been created by scientists. A completely opaque material is irradiated from above with a specific wave pattern -- with the effect that light waves from the left can now pass through the material without any obstruction. This surprising result opens up completely new possibilities for active camouflage. […]

  • New way to stabilize next-generation fusion plasmas
    on September 12, 2017 at 5:48 pm

    Recent experiments conducted on the DIII-D National Fusion Facility suggest that up to 40 percent of high-energy particles are lost during tokamak fusion reactions because of Alfvén waves. […]

  • Apparent macroscopic violation of the second law of thermodynamics in a quantum system is discovered
    on September 11, 2017 at 7:46 pm

    Researchers have encountered a partial violation of the second law of thermodynamics in a quantum system known as Hofstadter lattice. This partial violation has no place within the framework of classical physics. […]

  • Connecting up the quantum internet
    on September 11, 2017 at 4:27 pm

    Major leap for practical building blocks of a quantum internet: New research demonstrates how to dramatically improve the storage time of a telecom-compatible quantum memory, a vital component of a global quantum network. The technology operates in the same 1550 nanometer band as today's telecommunications infrastructure. It can also be operated as a quantum light source or used as an optical link for solid-state quantum computing devices such as superconducting qubits and silicon qubits. […]

  • First on-chip nanoscale optical quantum memory developed
    on September 11, 2017 at 4:26 pm

    Engineers have built a chip capable of storing and retrieving individual photons of light, with all of their quantum properties left intact. The chip represents the first nanoscale optical quantum memory device, and could one day be used to create more secure Internet communications. […]

  • Using mirrors to improve the quality of light particles
    on September 11, 2017 at 1:59 pm

    Scientists have succeeded in dramatically improving the quality of individual photons generated by a quantum system. The scientists have successfully put a 10-year-old theoretical prediction into practice. With their paper, they have taken an important step towards future applications in quantum information technology. […]

  • High-speed quantum memory for photons
    on September 9, 2017 at 12:54 am

    Physicists have developed a memory that can store photons. These quantum particles travel at the speed of light and are thus suitable for high-speed data transfer. The researchers were able to store them in an atomic vapor and read them out again later without altering their quantum mechanical properties too much. This memory technology is simple and fast and it could find application in a future quantum Internet. […]

  • Quantum detectives in the hunt for the world's first quantum computer
    on September 7, 2017 at 6:26 pm

    A new paper is the latest confirmation of Majorana fermions -- a strange quasiparticle at the heart of the next generation of quantum machines being pursued by engineers. […]

  • Curious properties: Researchers analyze flocking behavior on curved surfaces
    on September 7, 2017 at 5:25 pm

    A murmuration of starlings. The phrase reads like something from literature or the title of an arthouse film. In fact, it is meant to describe the phenomenon that results when hundreds, sometimes thousands, of these birds fly in swooping, intricately coordinated patterns through the sky. […]

  • Particle physicists on a quest for 'new physics'
    on September 6, 2017 at 6:29 pm

    The Large Hadron Collider (LHC) at CERN, the European Organization for Nuclear Research, produces hundreds of millions of proton collisions per second. But researchers working on the Large Hadron Collider beauty (LHCb) experiment can only record 2,000 of those collisions, using one of the detectors installed on the accelerator. So in the end, this technological marvel leaves the physicists wanting more. They are convinced that the vast volume of uncaptured data holds the answers to several unresolved questions. […]

  • Quantum tech has its sights set on human biochemistry
    on September 6, 2017 at 2:36 pm

    Scientists have developed a new tool for imaging life at the nanoscale that will provide new insights into the role of transition metal ions such as copper in neurodegenerative diseases. […]

  • New tool for characterizing quantum simulators
    on September 6, 2017 at 2:35 pm

    Physicists are developing quantum simulators, to help solve problems that are beyond the reach of conventional computers. However, they first need new tools to ensure that the simulators work properly. Researchers have now implemented a new technique in the laboratory that can be used to efficiently characterize the complex states of quantum simulators. The technique could become a new standard tool for characterizing quantum simulators. […]

  • Flip-flop qubits: Radical new quantum computing design invented
    on September 6, 2017 at 2:35 pm

    Engineers have invented a radical new architecture for quantum computing, based on novel 'flip-flop qubits,' that promises to make the large-scale manufacture of quantum chips dramatically cheaper -- and easier -- than thought possible. The new chip design allows for a silicon quantum processor that can be scaled up without the precise placement of atoms required in other approaches. […]

  • Solubility study could impact energy, biology, environment
    on September 5, 2017 at 4:32 pm

    Chemical engineers have used the most realistic computer model yet devised to simulate the precise atomic and molecular interactions that come into play when water mixes with alkanes, a family of hydrocarbons that includes methane, propane and other refined products. […]

  • Equation reveals the characteristics of quantum chaos
    on September 4, 2017 at 1:37 pm

    Researchers have now succeeded in formulating a mathematical result that provides an exact answer to the question of how chaos actually behaves. The researchers have analyzed chaotic states at the atomic level. […]

  • Integrated quantum optical circuits soon a reality
    on August 30, 2017 at 1:49 pm

    A research group in quantum nano photonics has developed a new method that represents a significant step toward enabling optical quantum information processing on a chip. […]

  • Tweaking thermoelectric voltage across atomic-scale gold junction by mechanical force
    on August 25, 2017 at 4:49 pm

    Scientists have achieved precise and fully reversible switching of the polarity of voltage produced by the thermoelectric effect across a gold junction with an atomic-scale contact. The control of thermoelectric voltage was achieved by mechanically elongating the contact. This technology is expected to find applications in thermopower generation, measurement techniques in materials science, and solid-state electronic devices. […]

  • Strange state of matter in superconducting crystal
    on August 24, 2017 at 3:06 pm

    New research shows a rare state of matter in which electrons in a superconducting crystal organize collectively. The findings lay the groundwork for answering one of the most compelling questions in physics: How do correlated electron systems work, and are they related to one another? […]

  • Scientists develop novel 'dot' system to improve cancer detection
    on August 24, 2017 at 1:38 pm

    Researchers have advanced a tumor-imaging nanosystem for enhanced diagnostic imaging, outlines a new report. […]

  • 'Nano-hashtags' could provide definite proof of Majorana particles
    on August 23, 2017 at 5:12 pm

    An advanced quantum chip will be able to provide definitive proof of the mysterious Majorana particles and a crucial step towards their use as a building block for future quantum computers, say researchers. […]