Single-Loop and Composite-Loop Realization of Nonadiabatic Holonomic Quantum Gates in a Decoherence-Free Subspace
Zhennan Zhu, Tao Chen, Xiaodong Yang, Ji Bian, Zheng-Yuan Xue, Xinhua Peng · Physical Review Applied · 2019
Quantum gates induced by geometric phases are important for fault-tolerant quantum computing, due to their built-in resilience to noise, but their application is held back due to the complexity of physically implementing them. Based on conventional two-body interaction, this study uses single- and composite-loop techniques to tackle quantum computation with non-Abelian geometric phases. Furthermore, experiments verify that the composite-loop scheme can indeed improve the noise resilience of the implemented gates.