Progress Overview of Superconducting Quantum Chip Based on Josephson Junction

Superconducting quantum computers have the advantages of mature chip processing technology,high system integration,and good scalability.However,superconducting quantum computing needs to increase the quantum integration of chips and ensure decoherence time of quantum chips to achieve fault-tolerant quantum computing.The advancement of superconducting quantum chips is analyzed,and the physical mechanism,advantages and disadvantages of superconducting quantum bus are presented,and several basic quantum bits characteristics are studied.The coupling scheme is discussed between superconducting qubits,including local and non-local coupling.Analysis results on mainstream expansion and layout schemes in recent years show that quantum algorithm programming is suitable for one-dimensional or two-dimensional arrays,while maximum entanglement and full coupling use wraparound expansion schemes to achieve large-scale,high-efficiency quantum to provied an idea for the design of the computational chip.

# Computer engineering. Computer hardware # Computer software # superconducting quantum bit|decoherence time|coupling|surface code|quantum algorithm

YU Xuan,LU Xin,XI Jun,SHAO Peinan (2018). "Progress Overview of Superconducting Quantum Chip Based on Josephson Junction". Jisuanji gongcheng. https://doi.org/10.19678/j.issn.1000-3428.0051917