Development of an on-chip Power Divider for the Quantum Voltage Chip
LI Xiaoyu1,XU Sisi1,CHENG Qianshuo2,ZHONG Yuan2,CAO Wenhui2,LI Jinjin2
1. College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China
2. National Institute of Metrology,Beijing 100029, China
Abstract Using the power divider in the quantum voltage chip is one of the most important methods to improve the quantum output amplitude of the quantum chip. The π-type LC circuit can achieve a small on-chip Wilkinson power divider, and add a λ/4 converter to broaden the working bandwidth. Developing an on-chip broadband Wilkinson power divider based on the design simulation. In the range of 13GHz to 23GHz, the power allocation is given in (3.0±0.25)dB. In the range of 12GHz to 23GHz, its input and output reflections are respectively below -12dB and -10.5dB. In the range of 1.5GHz to 30GHz, three arrays with power divider are irradiated by microwave. The test result shows that the three Josephson junction arrays are the same, proving that the power divider can effectively achieve two-way equal output.
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2024, Vol. 45 
