Gate-voltage noise limits accuracy of qubit calculations

Researchers Xinning Wang, Bohdan Khromets, Zach Merino and Jonathan Baugh, affiliated with the Institute for Quantum Computing, University of Waterloo, and the Departments of Chemistry and Physics/Astronomy at the University of Waterloo, have identified a critical limitation in silicon spin-qubit technology. Their work demonstrates that gate-voltage noise significantly impacts the accuracy of variational quantum eigensolvers, a specific type of quantum algorithm used for tasks like molecular simulation. The data supporting this study are available upon reasonable request from the authors. Silicon spin qubits, a leading candidate for scalable quantum computing, face a critical limitation in their ability to accurately execute variational quantum eigensolvers (VQE), a hybrid quantum-classical algorithm used for…