Quantum Physics News

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Quantum Hall Effect 'Reincarnated' in Topological Superconductors

U.S. and German physicists have found surprising evidence that one of the most famous phenomena in modern physics -- the quantum Hall effect -- is "reincarnated" in topological superconductors that could be used to build fault-tolerant quantum computers.

19 May 2020

Discovery May Provide Insight into Superconductivity and Quantum Computing

It sounds like a riddle: What do you get if you take two small diamonds, put a small magnetic crystal between them and squeeze them together very slowly-

19 May 2020

Superconductors Exhibit Magnetic State with Broken Time-Reversal Symmetry

At TU Dresden, a group of physicists has identified spontaneous static magnetic fields exhibiting broken time-reversal symmetry in a family of iron-based superconductors.

19 May 2020

New Toxic-Element-Free, Quantum Dot Solar Cells Exhibit High Efficiency

Researchers at Los Alamos National Laboratory have developed innovative quantum dot solar cells that match the efficiency of prevalent quantum-dot based devices, without using lead or other toxic elements on which a majority of solar cells of this kind depend.

19 May 2020

Study Finds High-Frequency Noise Affects Performance of Quantum Computers

Researchers at RIKEN have found the source of noise that mostly affects the accurate management of data in quantum computers based on semiconductor quantum dots.

18 May 2020

Common Origin of Fermi Bubbles and Galactic Center Biconical X-Ray Structure Revealed

A pair of gigantic gamma-ray bubbles centered on the core of the Milky Way galaxy were discovered by the Fermi Gamma-ray Space Telescope 10 years ago.

18 May 2020

Researchers Reveal Why a Mysterious Material Demonstrates an Unintuitive Behavior

Tantalum disulfide is a mysterious material. According to textbook theory, it should be a conducting metal, but in the real world it acts like an insulator.

18 May 2020

Quantum Study may Lead to New Generation of Logic and Memory Devices

When it comes to developing electronic devices, researchers generally search for ways to exploit and regulate the three rudimentary characteristics of electrons—their spin states, which result in magnetism; their charge; and the shapes of the indistinct clouds they create around the atoms’ nuclei, which are called orbitals.

18 May 2020

Researchers Observe Long-Lived Plasmons in Quasi 2D Crystals

Plasmons, which are wavelike, collective oscillations of electrons, are highly crucial for identifying the optical and electronic properties of metals.

15 May 2020

Topological Waves Could Provide New Way to Understand the Properties of Plasmas

Nearly 50 years ago, Brown University physicist Michael Kosterlitz and his colleagues used the mathematics of topology -- the study of how objects can be deformed by stretching or twisting but not tearing or breaking -- to explain puzzling phase changes in certain types of matter.

15 May 2020