Engineered atomic arrays for quantum computers

Researchers at the Institut d’Optique Graduate School at the CNRS and Université Paris-Saclay have used a laser-based technique to rearrange cold atoms one-by-one into fully ordered 3D patterns. The arrays, which contain as many as 72 neutral atoms held in an optical trap, could be used to simulate quantum complex many-body systems in physics. While classical Read more about Engineered atomic arrays for quantum computers[…]

Could skyrmions solve the baryogenesis problem?

Magnetic nanoparticles known as skyrmions and their antiparticle equivalents can behave very differently, according to new calculations by researchers in Sweden, Germany and France. This unexpected new finding could have important consequences for any potential technologies involving these particles, such as new generation data storage and information processing devices. Matter and antimatter in the nanoscale Read more about Could skyrmions solve the baryogenesis problem?[…]

Wet etching makes high quality topological superconductor

Topological insulators have shot to fame in recent years following observations of exotic phenomena like the quantum spin Hall (QSH) effect in quantum wells made from mercury telluride (HgTe). However, research on these materials, which are electrical insulators in the bulk, but which can conduct electricity on their surface (via special surface electronic states), is Read more about Wet etching makes high quality topological superconductor[…]

New knit theory could help make smart self-folding materials

As well as being a popular and pleasant hobby, knitting is a thousand-year-old technology and, unlike weaving, it can produce loose yet extremely stretchable fabrics. Researchers in France have now developed a model to describe how individual stitches in a knitted fabric deform when stretched. The work could help in the design of thread-based smart Read more about New knit theory could help make smart self-folding materials[…]

Nanoporous carbon electrodes harvest blue energy

Blue energy production and water desalination Blue energy, which is the free energy lost when salty sea water and less salty river water meet and mix in estuaries, could become a significant source of global electricity in the future. Capacitive mixing, an up-and-coming technique that exploits the charge-discharge cycle of capacitors, can be used to Read more about Nanoporous carbon electrodes harvest blue energy[…]

Phase-separated state could make nanoscale switch

The experiment. Courtesy: Nano Letters 10.1021/acs.nanolett.7b04728 The so-called phase-separated state in perovskite nickelate materials might be put to good use in nanoscale devices such as switches or memristors. In contrast to some other technologies that exploit these materials, such devices would operate electronically rather than through redox processes or the movement of ions, and could Read more about Phase-separated state could make nanoscale switch[…]

Magnetic skyrmions could make storage bits for next-generation memories

Skyrmion team Magnetic skyrmions are quasiparticle magnetic spin configurations with a whirling vortex-like structure that could be used as storage bits in next-generation “racetrack” memories and logic devices thanks to their small size and their robustness to external perturbations. Researchers at CNRS, Thales and the Université Paris-Saclay in France have now succeeded in nucleating these Read more about Magnetic skyrmions could make storage bits for next-generation memories[…]