Divided-Qubit Noise-Tolerant Strategy for Bell State Preparation in Qiskit

Yang Ou¹ and Sun Wenming²

Abstract

This study focuses on the high-fidelity preparation of Bell states under depolarizing noise. Based on Qiskit simulation, a divided-qubit anti-noise method is proposed: dynamic decoupling is applied to the control qubit, and quantum error correction is used for the target qubit. The results show that the fidelity can be maintained at 1.0000, the error rate is reduced from approximately 24% to 0.4%, and only 4 additional gates are required. This method achieves high-fidelity entanglement with low complexity and has practical potential.

Keywords

Corresponding Author

Sun Wenming, Graduate School of Science, The University of Tokyo, Tokyo.

Citation

Ou, Y., Wenming, S. (2025). Divided-Qubit Noise-Tolerant Strategy for Bell State Preparation in Qiskit. Int J Phys Sci Res. 1(1), 01-16.