Researchers show an old law still holds for quirky quantum materials (07/12/2023)
Long before researchers discovered
the electron and its role in generating electrical current, they knew about
electricity and were exploring its potential. One thing they learned early on
was that metals were great conductors of both electricity and heat.
Study offers correction for better calculations for the magnetic properties of neodymium compounds (07/12/2023)
High-energy neutron scattering is a
powerful tool in spectroscopy, allowing researchers to probe the physical and
chemical properties of many different materials.
Photonic chips can calculate optimal shape of light for next-gen wireless systems (01/12/2023)
Optical wireless may no longer
have any obstacles. A study by Politecnico di Milano, conducted together with
Scuola Superiore Sant'Anna in Pisa, the University of Glasgow and Stanford
University, and published in Nature Photonics, has made it
possible to create photonic chips that mathematically calculate the optimal
shape of light to best pass through any environment, even one that is unknown
or changing over time.
Researchers invent new way to stretch diamond for better quantum bits (01/12/2023)
A future quantum network may
become less of a stretch thanks to researchers at the University of Chicago,
Argonne National Laboratory and Cambridge University.
For the first time, researchers
have succeeded in selectively exciting a molecule using a combination of two
extreme-ultraviolet light sources and causing the molecule to dissociate while
tracking it over time. This is another step towards specific quantum mechanical
control of chemical reactions, which could enable new, previously unknown
reaction channels.
Physicists find evidence of exotic charge transport in quantum material (28/11/2023)
True to form, a "strange
metal" quantum material proved strangely quiet in recent quantum noise
experiments at Rice University. Published this week in Science,
the measurements of quantum charge fluctuations known as "shot noise"
provide the first direct evidence that electricity seems to flow through
strange metals in an unusual liquidlike form that cannot be readily explained
in terms of quantized packets of charge known as quasiparticles.
A universal framework describing the scrambling of quantum information in open systems (28/11/2023)
In recent years, physicists have
been trying to better understand how quantum information spreads in systems of
interacting particles—a phenomenon often referred to as "scrambling."
Scrambling in closed systems, physical systems that can only exchange energy
with degrees of freedom within the system, is a characteristic feature of
chaotic many-body quantum dynamics.
Limits for quantum computers: Perfect clocks are impossible, research finds (28/11/2023)
There are different ideas about
how quantum computers could be built. But they all have one thing in common:
you use a quantum physical system—for example, individual atoms—and change
their state by exposing them to very specific forces for a specific time.
However, this means that in order to be able to rely on the quantum computing
operation delivering the correct result, you need a clock that is as precise as
possible.
New computer code for mechanics of tissues and cells in three dimensions (21/11/2023)
Biological materials are made of
individual components, including tiny motors that convert fuel into motion.
This creates patterns of movement, and the material shapes itself with coherent
flows by constant consumption of energy. Such continuously driven materials are
called active matter.
High-power fiber lasers emerge as a pioneering technology (21/11/2023)
Optical scientists have found a
new way to significantly increase the power of fiber lasers while maintaining
their beam quality, making them a future key defense technology against
low-cost drones and for use in other applications such as remote sensing.
