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Scientists Create First Chiral Fermionic Valve Without Magnetism Quantum Geometry Enables Unprecedented Control of Quantum Particles A joint team led by Stuart Parkin at the Max Planck Institute of Microstructure Physics in Halle (Saale) and Claudia Felser at the Max Planch Institute for Chemical Physics of Solids in Dresden has unveiled a fundamentally new method for controlling quantum particles in solid materials. Writing in Nature , the researchers describe the first experimental realization of a chiral fermionic valve — a device that spatially separates quantum particles of opposite chirality using quantum geometry alone , without the need of magnetic fields or magnetic materials. More cutting-edge quantum physics coverage Breakthrough Driven by Mesoscopic Quantum Devices The breakthrough was driven by Anvesh Dixit , a PhD student in Parkin's and the study's first author, who designed, fabricated and measured the mesoscopic devices at the heart of the discovery. ...

First Measurement of Quantum Geometry Marks a New Era in Quantum Physics Introduction to Quantum Geometry in Solids For the first time, MIT physicists and collaborators have directly measured the quantum-level geometry of electrons in solids. While the energies and velocities of electrons in crystalline materials are well-studied, their quantum geometry has  previously been accessible only through theoretical inferences or remained unobservable. O pening New Avenues in Quantum Physics Riccardo Comin, MIT's Class of 1947 Career Develo pment Associate Professor of Physics and lead researcher, describes the study,  published in the November 25 issue of Nature Physics , as o pening "new avenues for understanding and mani pulating the quantum  pro perties of materials." A New Framework for Quantum Research "We've effectively created a framework for accessing entirely new information that was  previously unattainable," says Comin, who is also affiliated with MIT...