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“#New model helps to describe defects and errors in quantum computers” At the point at which the energy landscape splits, the high symmetry chain decays into a lower symmetry state when the critical point is passed. In this case, a straight chain decays into a zig-zag configuration when the anisotropy lambda(t) passes a critical value…
“#Fifty perfect photons for ‘quantum supremacy’” Credit: University of Twente Fifty is a critical number for quantum computers capable of solving problems that classic supercomputers cannot solve. Proving quantum supremacy requires at least 50 qubits. For quantum computers working with light, it is equally necessary to have at least 50 photons. And what’s more, these…
“#A fresh twist in chiral topology” Counting of the topological charge, called the Chern number (C). Strong spin-orbit coupling is induced by heavier elements as indicated by the deeper background color of the pictured elements. Stronger spin-orbit coupling leads to more obvious split Fermi arcs. This allows the number of states crossing the closed loop…
“#World’s fastest Bose-Einstein condensate created” The sample (inside a glass side). Credit: Aaro Väkeväinen and Konstantinos Daskalakis/Aalto University Researchers have created a Bose-Einstein condensate with record speed, creating the fascinating phase of matter in about 100 femtoseconds. To get an idea of how quick that is, hundred femtoseconds compared to one second is proportionally the…
“#Is teleportation possible? Yes, in the quantum world” A quantum processor semiconductor chip is connected to a circuit board in the lab of John Nichol, an assistant professor of physics at the University of Rochester. Nichol and Andrew Jordan, a professor of physics, are exploring new ways of creating quantum-mechanical interactions between distant electrons, promising…
“#Skyrmion dynamics and traverse mobility” Skyrmion trajectory with red circles representing obstacles; Credit: EPJ B Skyrmions could revolutionise computing exhibiting great potential in the electronic storage of information, and the key to such a breakthrough could be understanding their behaviour under applied currents. As the demands on information technology increase, the need to improve the storage…
“#Quantum rings in the grip of laser light” by The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences </p><div> <div> <div data-src=”https://scx2.b-cdn.net/gfx/news/hires/2020/quantumrings.jpg” data-sub-html=”Ultracold atoms caught in an optical trap form suprisingly complex structures. Dependently on mutual interactions between particles with opposite spins, phases with various properties can be created locally. Credit: IFJ PAN”…
“#Researchers perform quantum simulation of dynamical phase transitions” Fig. 1 Time evolution of the magnetization and time-averaged magnetization as a function of transverse field. Credit: IOP Quantum simulation uses a controllable quantum system to mimic complex systems or solve intractable problems, among which the non-equilibrium problems of quantum many-body systems have attracted wide research interest….
“#New techniques improve quantum communication, entangle phonons” Former postdoctoral fellow Audrey Bienfait was part of a team that entangled two phonons–the quantum particles of sound–for the first time, opening the door to potential new technologies. Credit: Nancy Wong Quantum communication—where information is sent through particles, typically entangled photons—has the potential to become the ultimate secure…