Topological superconductivity application is the most exciting high energy quantum computer
Based on iron-based high temperature superconducting materials research by Chinese scientists find new one-dimensional topological boundary States, human beings is expected to open doors of high energy quantum computer.
Recently, internationally renowned academic journal nature materials (Nature Materials) published a study on iron-based high temperature superconducting materials an important progress in the area of one-dimensional topology--new finds in the border States. Topological superconductivity application is the most exciting high energy quantum computers, it found an error in the calculation of, once an error has occurred in the information process of resistance.
These micro-scale research by the University of science and technology of China in Hefei national laboratory for physical sciences Wang Zhengfei Professor and United States University of Utah Professor, Liu Feng, Xue Qikun, Tsinghua University, academician of CAs and Ma Xucun researcher, researcher at the Institute of physics Chinese Academy of Sciences Zhou Xingjiang cooperation.
Superconducting and topology are two of the most interesting in the field of solid materials quantum phenomena, topology entangled to form the two superconducting form, in the field of quantum phenomena is notable, therefore, superconducting materials and topological materials are two hot topics in the study of condensed matter physics in recent years. Topology of the superconducting State is a new State of matter, is different from traditional superconductors, topology and topological characteristics of superconducting material that is both superconductive materials, the Interior is the superconducting State, surface or boundary is about 1 nanometer thick gapless metal protected by topology. If a topological superconductivity in two, the new surface will naturally occur with a layer thickness of about 1 nanometer metallic state protected by topology.
Ideal particle-quantum computing-mayuelanafeimizi
Different from ordinary computers handled by binary data, the quantum computer is an mechanism of processing data computer based on quantum physics. It is uses subatomic particles "quantum" to store and process information. Quantum computers are faster to what extent? Scholars have said, if the traditional binary computer speed bikes, speed of quantum computers is like a plane. In full swing of camp changed by pilot opened
Why, to this day, man has failed to result in a real quantum computer? This is due to particles of quantum computation "quantum state" is not stable, or physical interference electromagnetic interference can be easily upset the calculations should be carried out. So, you need a particle not subject to interference.
Ideal particle, is mayuelanafeimizi. Theoretical physicist predicted that the topological superconductor magnetic vortices under spin Center will produce mayuelanafeimizi. Due to the mayuelanafeimizi of the antiparticle is its own, its status is very stable, not easily conventional electromagnetic interference or physical damage, which can be used to define the qubits in quantum computing.
Quantum bit of coherent sex is refers to electronic right since spin and Positron left since spin of State related joint, and traditional computer different, quantum computer of operation time due to quantum bit between of coherent sex of exists and has limit, after must of time Hou, quantum bit between once encountered outside entity of observation, will lost coherent sex, quantum coherent sex attenuation that for "back coherent", if back coherent time enough long, on cannot completed calculation. In order to play the advantages of quantum computing, the hardware needs to qubit coherence, topology of superconducting materials helped to solve the quantum bit's Decoherence problem and increase their survival time is very important in the field of quantum computers.
Mayuelanafeimizi topological boundary State and superconducting materials and what does it matter? Topology, and superconducting double quantum phenomena of novel superconducting materials, can be considered a special insulation, take advantage of that, you can "trick" electronic run to the material's surface and convert it to malayuenafeimizi.
Physicist, l andelu·Lei's words, have characteristics of both "superconductor is an ideal parental generation and control malayuenafeimizi. "
HTS, China is the world's leader in
How to design a search topology of superconducting materials, has been the focus of researchers. Many materials found in nature are just a single superconducting or topological insulator, superconductivity and topologies both difficult to coexist in the same material. Previous research using topological materials placed on the epitaxial growth of superconducting materials and superconducting materials placed on topological materials, topology through proximity effect superconductors. But this growth process of composites for the very demanding, hinder the development of topological study on superconducting materials.
The aforementioned study, Chinese scientists to FeSe/SrTiO3 for the study of new high temperature superconducting materials, combined with theoretical calculation and angle-resolved photoelectron spectroscopy, scanning tunneling microscopy, systematic study of antiferromagnetic electronic configuration in real space observation of spin-orbit coupling in a topological gap opened by the existence of a new kind of one dimensional topological boundary States.
The work to further understand the FeSe/SrTiO3 of high-temperature superconducting mechanism to explore the topology of single materials at high temperature superconductors and mayuelanafeimizi have opened up new pathways.
HTS is the world leader in the field in China. In 2013, the Institute of physics, Chinese Academy of Sciences established the iron into a new class of high-temperature superconductors were first found in critical temperatures higher than 40K under atmospheric pressure (about lingxia233sheshidu), superconductivity, breaking the Macmillan limit temperature. In August 2015, strong magnetic field of Chinese Academy of Sciences Center have developed a new type of high quality single crystals, using high temperature melting method into alkaline earth metal strontium bismuth selenide typical topological insulator materials, access to a high quality of topological superconducting single crystals. Superconducting properties of such materials as high as 91.5%, and is very stable in the air at 10 Tesla to 35 Tesla magnetic field there have been periodic quantum oscillator signal to prove that they are topologically protected surface States.
Due to its magnetic, iron-based compound was once almost countless international top physicists claim to explore the area of high-TC superconductors. In January 2014, to officials, Chen Xian-Hui, Wang Nan Lin, Wen Hai-Hu, Fang Zhong as the representative of Institute of physics, Chinese Academy of Sciences, condensed matter/Beijing National Laboratory and the research team at the University of science and technology in China "above 40K discovery and research on several fundamental physical properties of iron-based high temperature superconductors" won the first prize of the National Natural Science Foundation's outstanding contribution. Until then, the award has vacancies for 3 years.
No comments:
Post a Comment