Feb 10, 2025 06:53 PM
(This post was last modified: Feb 10, 2025 10:03 PM by C C.)
A symphony in quantum
https://www.eurekalert.org/news-releases/1073205
INTRO: Entanglement – linking distant particles or groups of particles so that one cannot be described without the other – is at the core of the quantum revolution changing the face of modern technology.
While entanglement has been demonstrated in very small particles, new research from the lab of University of Chicago Pritzker School of Molecular Engineering (UChicago PME) Prof. Andrew Cleland is thinking big, demonstrating high-fidelity entanglement between two acoustic wave resonators.
The paper was published in Nature Communications..... (MORE - details, no ads)
Scientists discover new class of quantum states in graphene
https://www.sciencealert.com/scientists-...n-graphene
EXCERPTS: Graphene has been increasingly seen as something of a wonder material over recent decades, its lattice of carbon atoms connected in a way that leaves spare electrons to leap about like tokens in a game of quantum checkers.
Physicists have consistently bent the rules of this game, finding new and unusual ways to alter properties of resistance or coordinate into exotic states. For these reasons, graphene has become a perfect playground to search for clues on low-resistance conductivity or test the boundaries of various quantum effects.
One such effect is a 'freezing' of electrons into restricted positions, effectively turning them from a flowing liquid-like mass into something with structure. [...] structures in the twisted graphene play havoc with the electron's geometry, or what is referred to as the topology of its landscape. The result is a shift in the electron's speed, with some even developing a twist as they move along the edges of the material.
"This leads to a paradoxical behavior of the topological electronic crystal not seen in conventional Wigner crystals of the past – despite the crystal forming upon freezing electrons into an ordered array, it can nevertheless conduct electricity along its boundaries," says Folk.
[...] New states of topological activity like this are a potential gold mine for physicists keen to explore ways to create quantum computing units known as qubits that are more resistant than the conventional sorts based on fundamental particles. ... This research was published in Nature...... (MORE - missing details)
https://www.eurekalert.org/news-releases/1073205
INTRO: Entanglement – linking distant particles or groups of particles so that one cannot be described without the other – is at the core of the quantum revolution changing the face of modern technology.
While entanglement has been demonstrated in very small particles, new research from the lab of University of Chicago Pritzker School of Molecular Engineering (UChicago PME) Prof. Andrew Cleland is thinking big, demonstrating high-fidelity entanglement between two acoustic wave resonators.
The paper was published in Nature Communications..... (MORE - details, no ads)
Scientists discover new class of quantum states in graphene
https://www.sciencealert.com/scientists-...n-graphene
EXCERPTS: Graphene has been increasingly seen as something of a wonder material over recent decades, its lattice of carbon atoms connected in a way that leaves spare electrons to leap about like tokens in a game of quantum checkers.
Physicists have consistently bent the rules of this game, finding new and unusual ways to alter properties of resistance or coordinate into exotic states. For these reasons, graphene has become a perfect playground to search for clues on low-resistance conductivity or test the boundaries of various quantum effects.
One such effect is a 'freezing' of electrons into restricted positions, effectively turning them from a flowing liquid-like mass into something with structure. [...] structures in the twisted graphene play havoc with the electron's geometry, or what is referred to as the topology of its landscape. The result is a shift in the electron's speed, with some even developing a twist as they move along the edges of the material.
"This leads to a paradoxical behavior of the topological electronic crystal not seen in conventional Wigner crystals of the past – despite the crystal forming upon freezing electrons into an ordered array, it can nevertheless conduct electricity along its boundaries," says Folk.
[...] New states of topological activity like this are a potential gold mine for physicists keen to explore ways to create quantum computing units known as qubits that are more resistant than the conventional sorts based on fundamental particles. ... This research was published in Nature...... (MORE - missing details)