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Unique electrical properties in quantum materials can be controlled using light

Microscopic image of multiple electrodes on a sheet of Weyl semimetal, with red and blue arrows depicting the circular movement of the light-induced electrical current by either left- (blue) or right-circularly polarized light (right). Credit: Zhurun Ji Insights from quantum physics have allowed engineers to incorporate components used in circuit boards, optical fibers, and control […]

Turning water into ice in the quantum realm

Graphic depicting the weak interactions between neutral atoms in an ultracold gas. Credit: Steven Burrows/JILA When you pop a tray of water into the freezer, you get ice cubes. Now, researchers from the University of Colorado Boulder and the University of Toronto have achieved a similar transition using clouds of ultracold atoms. In a study […]

Quantum entanglement in chemical reactions? Now there’s a way to find out

Purdue researchers have modified a popular theorem for identifying quantum entanglement and applied it to chemical reactions. This quantum simulation of a chemical reaction yielding deuterium hydride validated the new method. Credit: Purdue University /Junxu Li Scientists have long suspected that a quantum phenomenon might play a role in photosynthesis and other chemical reactions of […]

Is your supercomputer stumped? There may be a quantum solution

Chia Cheng ‘Jason’ Chang Credit: Marilyn Chung/Lawrence Berkeley National Laboratory Some math problems are so complicated that they can bog down even the world’s most powerful supercomputers. But a wild new frontier in computing that applies the rules of the quantum realm offers a different approach. A new study led by a physicist at Lawrence […]

Quantum computers to clarify the connection between the quantum and classical worlds

White crosses represent solutions to a simple quantum problem analyzed with a new quantum computer algorithm developed at the Los Alamos National Laboratory. Credit: LANL Los Alamos National Laboratory scientists have developed a new quantum computing algorithm that offers a clearer understanding of the quantum-to-classical transition, which could help model systems on the cusp of […]

Imaging of exotic quantum particles as building blocks for quantum computing

A. A monolayer of iron atoms assembled on a rhenium surface. B. Image of a Majorana fermion as a bright line along the edge of the iron using a scanning tunneling microscope. Credit: UIC/Dirk Morr Researchers at the University of Illinois at Chicago, in collaboration with their colleagues at the University of Hamburg in Germany, […]

Every transistor has a unique quantum fingerprint—but can it be used as a form of ID?

Single-electron effects in transistors can lead to unique electric properties that could be used for security purposes. Image credit: Pixabay We might imagine that electric current flows as a smooth, even stream of electrons through our electronics devices, but at the quantum scale the flow of electric current might be more accurately pictured as a […]

Physicists count sound particles with quantum microphone

Artist’s impression of an array of nanomechanical resonators designed to generate and trap sound particles, or phonons. The mechanical motions of the trapped phonons are sensed by a qubit detector, which shifts its frequency depending on the number of phonons in a resonator. Different phonon numbers are visible as distinct peaks in the qubit spectrum, […]