4 papers
Optimization of Controlled-Z Gate with Data-Driven Gradient Ascent Pulse Engineering in a Superconducting Qubit System
Zhiwen Zong, Zhenhai Sun, Zhangjingzi Dong +13
The experimental optimization of a two-qubit controlled-Z (CZ) gate is realized following two different data-driven gradient ascent pulse engineering (GRAPE) protocols in the aim o…
Experimental realization of nonadiabatic geometric gates with a superconducting Xmon qubit
P. Z. Zhao, Zhangjingzi Dong, Zhenxing Zhang +3
Geometric phases are only dependent on evolution paths but independent of evolution details so that they own some intrinsic noise-resilience features. Based on different geometric…
A simultaneous feedback and feed-forward control and its application to realize a random walk on the Bloch sphere in a superconducting Xmon-qubit system
Liang Xiang, Zhiwen Zong, Zhenhai Sun +9
Measurement-based feedback control is central in quantum computing and precise quantum control. Here we realize a fast and flexible field-programmable-gate-array-based feedback con…
Experimental realization of a fast controlled-Z gate via a shortcut-to-adiabaticity
Tenghui Wang, Zhenxing Zhang, Liang Xiang +8
For a frequency-tunable two-qubit system, a controlled-Z (CZ) gate can be realized by adiabatically driving the qubit system through an avoided level crossing between an auxiliary…