Nanostructures get complex with electron equivalents Complex crystals that mimic metals — including a structure for which there is no natural equivalent — can be achieved with a new approach to guiding nanoparticle self-assembly.
Photon pairs are more sensitive to rotations than single photons Quantum states of light have enabled novel optical sensing schemes, e.g., for measuring distance or position, with precisions impossible to achieve with classical light sources such as lasers. The fie …
Terahertz radiation source: Compact and simple Researchers have now succeeded in producing an extremely simple and compact source of terahertz radiation: An oscillator with double resonant-tunneling diodes. Its radiation power significantly outper …
Migrating holes help catalysts be productive A theoretical model suggests electron holes that propagate at active sites on a catalyst migrate, triggering other sites that continue the process.
Integrated photonics for quantum technologies An international team of leading scientists has compiled a comprehensive overview of the potential, global outlook, background and frontiers of integrated photonics. The paper is a roadmap for integra …
Magnetic surprise revealed in 'magic-angle' graphene Magnets and superconductors don't normally get along, but a new study shows that 'magic-angle' graphene is capable of producing both superconductivity and ferromagnetism, which could be …
Nematicity is a new piece in a phase diagram puzzle A team sees stripes in samples of twisted double bilayer graphene, indicating the presence of a nematic phase characterized by broken rotational symmetry.
Matter and antimatter seem to respond equally to gravity As part of an experiment to measure — to an extremely precise degree — the charge-to-mass ratios of protons and antiprotons, researchers have found that, within the uncertainty of the experiment, ma …
The first topological acoustic transistor Researchers have designed and simulated the first topological acoustic transistors — with sound waves instead of electrons — and proposed a connection architecture to form a universal logic gate tha …
Suppressing the Auger recombination process in quantum dots Quantum Dot (QD) is a nanometer-sized semiconductor nanocrystal that has unique optical properties such as the ability to emit light in the range of optical frequencies depending on its size. QDs have …
Resolving the black hole ‘fuzzball or wormhole’ debate Black holes really are giant fuzzballs, a new study says. The study attempts to put to rest the debate over Stephen Hawking's famous information paradox, the problem created by Hawking's con …
Snapshots from the quantum world A research collaboration can read out optically previously indistinguishable spin states by using a newly developed spectroscopy method.
3D semiconductor particles offer 2D properties Researchers have discovered that the junctures at the facet edges of 3D semiconductor particles have 2D properties, which can be leveraged for photoelectrochemical processes — in which light is used …
Novel semiconductor gives new perspective on anomalous Hall effect A large, unconventional anomalous Hall resistance in a new magnetic semiconductor in the absence of large-scale magnetic ordering has been demonstrated, validating a recent theoretical prediction. The …
A-list candidate for fault-free quantum computing delivers surprise Superconducting uranium ditelluride is a promising material in the race to create fault-tolerant quantum computers, but physicists are rethinking how superconductivity arises in the material in light …
Scientists demonstrate a novel rocket for deep-space exploration The growing interest in deep-space exploration has sparked the need for powerful long-lived rocket systems to drive spacecraft through the cosmos. Scientists have developed a tiny version of a Hall th …
Semiconductors reach the quantum world Quantum effects in superconductors could give semiconductor technology a new twist. Researchers have identified a composite material that could integrate quantum devices into semiconductor technology, …
Quantum marbles in a bowl of light Which factors determine how fast a quantum computer can perform its calculations? Physicists have devised an elegant experiment to answer this question.
Machine learning models quantum devices Technologies that take advantage of novel quantum mechanical behaviors are likely to become commonplace in the near future. These may include devices that use quantum information as input and output d …
Sensor based on quantum physics could detect SARS-CoV-2 virus Researchers found it's possible to design a sensor, based on quantum physics, that could detect the SARS-CoV-2 virus. The approach may offer faster, cheaper, and more accurate detection of Covid- …
Swinging on the quantum level For many applications making use of quantum effects, the light has to be in a certain state — namely a single photon state. But what is the best way of generating such single photon states? Researche …
Speeding the development of fusion energy Profile of path-setting method to simulate the crazy-quilt movement of free electrons during experimental efforts to harness on Earth the fusion power that drives the sun and stars. The method cracks …
Moments of silence point the way towards better superconductors High-precision measurements have provided important clues about processes that impair the efficiency of superconductors. Future work building on this research could offer improvements in a range of su …
Magnetic ‘hedgehogs’ could store big data in a small space Atomic-scale magnetic patterns resembling a hedgehog's spikes could result in hard disks with massively larger capacities than today's devices, a new study suggests. The finding could help d …
Nanodiamonds are key to efficient hydrogen purification Researchers describe how nanodiamond-reinforced composite membranes can purify hydrogen from its humid mixtures, making the hydrogen generation processes vastly more efficient and cost-effective.
A quantum view of 'combs' of light Frequency microcombs are specialized light sources that can function as light-based clocks, rulers and sensors to measure time, distance and molecular composition with high precision. New research pre …
Quantum theory needs complex numbers An international team of researchers shows through a concrete theoretical experiment that the prediction by standard complex quantum theory cannot be expressed by its real counterpart and ratifies its …
Losing isn’t always bad: Gaining topology from loss Losing particles can lead to positive, robust effects. An international collaboration has demonstrated a novel topology arising from losses in hybrid light-matter particles, introducing a new avenue t …
Quantum algorithms bring ions to a standstill Laser beams can do more than just heat things up; they can cool them down too. That is nothing new for physicists who have devoted themselves to precision spectroscopy and the development of optical a …
Discovery of ‘split’ photon provides a new way to see light Nearly a century after Italian physicist Ettore Majorana laid the groundwork for the discovery that electrons could be divided into halves, researchers predict that split photons may also exist. The f …
Resolving the puzzles of graphene superconductivity Since superconductivity in three-layered graphene was discovered in September, the physics community has been left puzzled. Now, three months later, physicists can successfully explain the results by …
Atom laser creates reflective patterns similar to light Cooled to almost absolute zero, atoms not only move in waves like light but also can be focused into shapes called caustics, similar to the reflecting or refracting patterns light makes on the bottom …
Machine learning decodes tremors of the universe Researchers train a neural network to estimate — in just a few seconds — the precise characteristics of merging black holes based on their gravitational-wave emissions. The network determines the ma …