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Energy Level Structure and Electronic Track Filling Schematic
Prof. Guo Guangcan, a professor at the University of Science and Technology of China and a key laboratory of the Quantum Information Institute of the Chinese Academy of Sciences, has made new progress in the field of new quantum bit coding. For the first time, the research team and collaborators of Guo Guoping successfully implemented a new type of electronically controlled encoding qubits with good coherence characteristics, fast manipulation speed, and strong controllability in gallium arsenide semiconductor quantum chips. The research results were published on February 25th. Published "Physical Review Letters".
Like modern computers, "quantum chips" are the "brains" of future quantum computers. The development of electronically controlled quantum chips compatible with modern semiconductor processes is one of the important directions for the development of quantum computers. The research group is devoted to the development of semiconductor quantum chips, implementing ultra-fast quantum computing roadmaps along charge-coded qubits, and implementing charge-coded ultrafast universal single-qubit logic gates [Nature Communications 4, 1401 (2013)] and Based on the two-qubit control non-logic gates [Nature Communications 6, 7681 (2015)], we continue to explore new methods for extending the coherence time of the charge-coded bits. We can obtain the spin-encoded quantum while guaranteeing the fast operating speed of quantum bits. Bits have the same long coherence property, which realizes quantum bit ultrafast control and long coherence time, thereby solving the core problem of performing quantum manipulation as much as possible in the bit coherence time.
The research group used the asymmetrical nature of semiconductor quantum dots in multi-electronic state orbits for the first time to realize new hybrid qubits in gallium arsenide semiconductor systems, subtly supercharging quantum qubits and spin qubits. The coherence of long coherence makes it possible to achieve a combination of "fish" (ultra-fast control) and "bear-shoulder" (long coherence). The experimental results show that the novel qubits are similar to the charge qubits and can realize ultra-fast quantum flipping from 0 to 1 in hundreds of picoseconds. However, the quantum coherence is nearly ten times higher than that of ordinary charge-coded qubits.
The novel multi-electron orbital hybridization has a strong universality in the way of realizing quantum bit encoding and regulation, and is applicable not only to the Group III semiconductors, but also to a series of semiconductors such as silicon germanium and even novel semiconductors such as graphene and TMDS. At the same time, this work provides new ideas for exploring the effects of polar phonons and piezoelectric effects on quantum coherence properties in semiconductors.
The work was funded by the Ministry of Science and Technology, the National Natural Science Foundation of China, the Chinese Academy of Sciences and the Ministry of Education.
The present invention provides a multifunctional pull faucet, comprising: a faucet body, a drawing part is provided at the water outlet port thereof, and the drawing part is connected to a main channel, wherein at least three are provided in the faucet body A branch channel, and the three branch channels are all connected to the main channel. A multifunctional pull faucet provided by the present invention, wherein the hot water channel, the cold water channel and the water purification channel (pure water channel) are all connected to the main channel , And the main channel is connected with the drawing part on the main body of the faucet, so that the drawing part can obtain the water quality (hot water, cold water, purified water or pure water) required by different users, thereby improving the user experience, and , By integrating the hot water channel, cold water channel and pure water channel (pure water channel) into the main channel, the internal structure of the faucet is simplified, and the production cost of the faucet is reduced.
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