How an electron behaves in an atom, or how it moves in a solid, can be predicted precisely with the equations of quantum mechanics. These theoretical calculations agree with the results from experiments. But complex quantum systems, which contain many electrons or elementary particles can currently not be described exactly. A team from Kiel University has now developed a simulation method, which enables quantum mechanical calculations up to around 10,000 times faster than previously possible.
In a first for quantum physics, University of Otago researchers have 'held' individual atoms in place and observed previously unseen complex atomic interactions.
Researchers at The University of Tokyo show how quantum entanglement can be used to produce single-shot detectors with the ability to measure an individual magnon in a magnetic sphere. This work may assist in the study of the foundations of magnetism, as well as the development of sensors that reach the fundamental limit of detection.
Researchers at the University of Cambridge have developed a novel technique for generating single photons, by moving single electrons in a specially designed light-emitting diode (LED). This technique, reported in the journal Nature Communications, could help the development of the emerging fields of quantum communication and quantum computation.
So far, many physicists have attempted to explain the problem of quantum superposition, as exemplified by Schrödinger's cat. The French theoretical physicist Franck Leloë proposes a possible solution, which combines two different approaches and brings in universal gravitation, in a novel paper in EPJ D.
The discovery shows that when electrons can be made to attract one another, they can form bunches of two, three, four and five electrons that behave like new types of particles.
Electric solid propellants are being explored as a safer option for pyrotechnics, mining, and in-space propulsion because they only ignite with an electric current. But because all of these applications require high heat, it's important to understand how the high temperatures change the propellants' chemistry. Researchers from the University of Illinois, Missouri University of Science and Technology, and NASA simulated the thermochemical properties to predict the thermochemistry of a new high-performance electric solid propellant.
Researchers from Graz University of Technology and the University of Vienna are demonstrating for the first time how the energy flow between strongly interacting molecular states can be better described.
Wearable tech requires both strength and flexibility. A new nanowire design -- a boron nitride nanotube (BNNT) filled with tellurium atomic chains -- holds promise for electronics triggered by light and pressure. In collaboration with Purdue University, Washington University and University of Texas at Dallas, Michigan Tech physicists created and tested the new nanowire alongside carbon nanotubes.
For decades, carbon nanotubes held great promise of developments in the field of electronics and more. But one drawback to realizing these innovations has been the difficulty of incorporating additional materials into nanotubes. For the first time, researchers have grown crystals of various materials uniformly onto the surface of carbon nanotubes. They hope these modified structures will exhibit functions useful in electronic, chemical or other applications.