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Updated: Sep 10, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
High-Fidelity Operations on Silicon Donor Qubits Using Dynamical Decoupling Gates
Jing Cheng1,2,3, Shihang Zhang4, Banghong Guo1,2,3
1Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Optoelectonic Science and Engineering, South China Normal University, Guangzhou 510006, China.
Abstract:
Dynamic decoupling (DD) can suppress decoherence caused by environmental noise, while in hybrid system it also hinders coherent manipulation between qubits. We realized the universal high-fidelity quantum gate set and the preparation of Bell states using dynamical decoupling gates (DD gates) in a silicon-based phosphorus-doped (Si:P) system, effectively resolving the contradiction between decoherence protection and manipulation of qubits. The simulation results show that the fidelity of the universal quantum gate set are all above 99%, and the fidelity of Bell state preparation is over 96%. This work realized the compatibility between coherent protection and high-fidelity manipulation of quantum states, provided a reliable theoretical support for high-fidelity quantum computing.
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