9-15 June 2018
Woodlands Conference Center
America/New_York timezone
**** See you at Real Time 2020 ****

Control and Readout Software in Superconducting Quantum Computing

12 Jun 2018, 14:40
1h 30m
Woodlands Conference Center

Woodlands Conference Center

159 Visitor Center Dr, Williamsburg, VA 23185
Poster presentation Control, Monitoring,Test and Real Time Diagnostics Systems Poster 1

Speaker

Dr Lin Jin (Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China)

Description

High-speed DAC and ADC boards as important parts of quantum computers are used to control and read out the states of qubits, their manipulation complexity is rapidly increasing as the number of qubits boosts. The low efficiency of communication, imperfections of electronic device and the coherent control of the qubits are gradually highlighted, which have become the bottleneck to scale up the qubits. To address the problems, we present a control and readout solution in this study. We adopted the C/S structure and developed two servers called the ADC server and DAC server which enable rapid physical experiments to implement. The DAC server realized waveform processing engine, which can not only mitigate the imperfections of the DAC itself, but also can compensate the transmission loss of circuit. To simplify the coherent control of device, we extract a logical layer for the server with corresponding physical resources and automatically aligned the timing of different channels. A simple data link layer protocol is designed for the high-bandwidth communication with ADC boards. According to the characteristics of low speed soft-core in FPGA, we design a multi-threaded communication mechanism to improve the overall data transmission efficiency of multiple DAC boards. By using these network optimization strategies, both data transmission rate of ADC and DAC boards can reach hundreds of Mbps.

Speaker Cheng Guo
Institute USTC
Minioral Yes
Description ADC/DAC control
Country China

Primary author

Mr Cheng Guo (Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China)

Co-authors

Dr Futian Liang (University of Science and Technology of China) Yu Xu (Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) Dr Lin Jin (Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) Ms Lihua Sun (Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China) Mr ShengKai Liao (Chinese Academy of Sciences (CAS) Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China) Prof. ChengZhi Peng (Chinese Academy of Sciences (CAS) Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China)

Presentation Materials