Authors: George Rajna
Stanford physicists have developed a "quantum microphone" so sensitive that it can measure individual particles of sound, called phonons.  A team of researchers from the Universities of Manchester, Nottingham and Loughborough has discovered a quantum phenomenon that helps to understand the fundamental limits of graphene electronics.  The authors suggest the magnetism, called orbital ferromagnetism, could prove useful for certain applications, such as quantum computing.  Scientists from the Skoltech Center for Photonics and Quantum Materials (CPQM) have developed a novel method to fine-tune the optoelectrical properties of single-walled carbon nanotubes (SWCNT) by applying an aerosolized dopant solution on their surface, thus opening up new avenues for SWCNT application in optoelectronics.  A DGIST research team discovered a theory that can expand the development of valleytronics technology, which has been drawing attention as a next generation semiconductor technology.  To produce the new ultra-thin transistor, calcium fluoride was selected as the insulating material.  University of Illinois electrical engineers have cleared another hurdle in high-power semiconductor fabrication by adding the field's hottest material-beta-gallium oxide-to their arsenal.  Transistors are tiny switches that form the bedrock of modern computing; billions of them route electrical signals around inside a smartphone, for instance. Quantum computers will need analogous hardware to manipulate quantum information.  "The realization of such all-optical single-photon devices will be a large step towards deterministic multi-mode entanglement generation as well as high-fidelity photonic quantum gates that are crucial for all-optical quantum information processing," says Tanji-Suzuki. 
Comments: 65 Pages.
[v1] 2019-07-28 01:15:49
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