CAS Key Laboratory of Quantum Information, led by Guo Guangcan, a professor at the University of Science and Technology of China, and CAS Academician of the Chinese Academy of Sciences, made new progresses in the new quantum bit coding. For the first time, Guo Guoping's research group and collaborators in this lab successfully achieved the new electronically controlled encoded quantum bits with good quantum coherence, fast manipulation and strong controllability in the gallium arsenide semiconductor quantum chip. The research results were published on February 25 Published in the "Physical Review Letters".
Like modern computers, "quantum chips" are the "brain" of the future quantum computer. The development of electronic control quantum chips compatible with modern semiconductor processes is one of the important directions for the development of quantum computers. The research team is dedicated to the development of semiconductor quantum chips, ultra-fast quantum circuit diagrams along charge-encoding qubits, and the subsequent implementation of charge-encoding ultrafast universal single-qubit gates [Nature Communications 4, 1401 (2013) Based on the two-quantum-controlled non-logic gates [Nature Communications 6, 7681 (2015)], we continue to explore a new method to prolong the coherence time of the charge-coded bits. The same long coherence of bits enables fast control of qubits and long coherence times, thus addressing the core issue of achieving as much quantum control as possible in bit-coherent time.
Using asymmetric characteristics of the multi-electron orbit of the semiconductor quantum dots, the research team first realized new orbital hybridization of qubits in a gallium arsenide semiconductor system, cleverly combining the fast quantum characterization of qubits with the spin qubit Long coherence features into one, to achieve the "fish" (ultra-fast control) and "bear's paw" (long coherence) have both. The experimental results show that the new qubit is similar to the qubit, which can achieve the ultrafast quantum flip from 0 to 1 in picoseconds, and its quantum coherence is nearly ten times higher than that of the general charge-encoded qubit.
The new multi-electron orbital hybridization method for realizing quantum bit coding and control has strong versatility and is not only applicable to III-V semiconductors, but also to new semiconductors such as SiGe and SiGe semiconductors and even to graphene and TMDS. At the same time, this work provides a new idea to explore the influence of polar phonon and piezoelectric effect on quantum coherence in semiconductors.
Energy level structure and electron orbit filling diagram
Shutter Sound Barrier are acoustic fences designed to act as a sound barrier and screen vehicle noise from roads,highways, railways, residential areas, construction sites.
Noise barriers help in absorbing the noise generating from vehicles on a heavy vehicular traffic area. Thus noise barriers have proven to be effective in absorbing noise and providing an excellent solution to subsidize noise for highway, residential areas near the busy roads, and also for schools, hospitals.
Materials: aluminum sheet, galvanized steel sheet .etc
Finishing:high-pressure electrostatic spray coating
Standard Height:2,000mm, 2,500mm, 3,000mm and space between poles 1,000mm, 2,000mm and 2,500mm. it is available upon customer request.
Features:
1. Absorptive and insulation type.
2. Minimum noise leakage due to special snap lock design.
3. High intensity and stability: special-made steel structure and aluminum material.
4. Safety: PC sun panel or double layers with pastern apply on the transparent insulation part to avoid hurting vehicle and others on case of incident.
5. Beautiful appearance, delicate workmanship, easy installation, low cost and long service life.
6. It has wide applications on express way, subway and industry noise control.
7. The light transmission of the sheet is quite good.
8. The weather resistant treatment of anti UV on the surface of the sheet prevents the resin from turning yellow by causing Ultraviolet ray.
9. The UV agent has chemical bond to change ultraviolet ray into visible light ,which has a stable effect on the photsynthesis of plants.
10. Temperature property: in the temperature from -40C to 120C, the product will not deform.
11. It is light in weight, easy to handle and drill,convenient for construction and procession .When cutting for installation ,it is not easy to be broken.
Applications:
1. Highway noise walls
2. Railway noise walls
3. Airport noise barriers
4. Security fence
5. Obscuration screens
6. Bridge and roof mounted noise barriers
7. Industrial noise control panels
8.Construction materials
9.School enclosures
Louver Upright Sound Barrier,Noise Barrier,Noise Barriers For Small Equipment
Anping shengsen metal wire mesh products co,. ltd , https://www.apshengsen.com