Demonstration of superadiabatic population transfer in superconducting qubit<xref rid="cpb_27_6_063202fn1" ref-type="fn">*</xref> <fn id="cpb_27_6_063202fn1"> <label>*</label> <p>Project supported by the National Key Basic Research and Development Program of China (Grant No. 2016YFA0301802) and the National Natural Science Foundation of China (Grant Nos. 11274156, 11504165, 11474152, and 61521001).</p> </fn>

Demonstration of superadiabatic population transfer in superconducting qubit* *

Project supported by the National Key Basic Research and Development Program of China (Grant No. 2016YFA0301802) and the National Natural Science Foundation of China (Grant Nos. 11274156, 11504165, 11474152, and 61521001).

Li Mengmeng, Tan Xinsheng^†, Dai Kunzhe, Zhao Peng, Yu Haifeng^‡, Yu Yang

(color online) (a) Schematic diagram of the reference magnetic field as a function of time. The red line ABC (blue dotted line DCE) represents the evolution path of the vector of the reference magnetic field for the first (second) scheme. (b) Schematic circuit diagram of the qubit control and measurement. The microwave modulated pulses are controlled by the IQ mixer, then they are applied to the 3D cavity input for manipulating the qubit. (c) Examples of the arbitrary waveform signals applied to the I port (the red solid line) and the Q port (the blue dotted line) of the mixer for the first scheme. The output signal from the RF port is the total magnetic field including the reference parts and the counter-diabatic parts. (d) Examples of the arbitrary waveform signals for the second scheme.