Robust excitation of 229Th via generalized composite pulses: Compensating generic errors across arbitrary pulse shapes

doi:10.1088/1674-1056/ae4e8d

Abstract High-fidelity coherent control is a universal challenge due to complex errors and imperfect pulse shapes. Here, we propose a generalized composite pulses scheme independent of pulse profile to correct generic errors. This approach could simultaneously compensate for pulse area errors, detuning, and phase imperfections. We demonstrate its application in the direct laser excitation of the ²²⁹Th nucleus isomer state, and show a significant improvement in the robustness against various operation errors, such as detuning, phase error, and pulse area error.

Keywords: thorium-229 isomeric state nuclear excitation composite pulses

Received: 19 January 2026
Revised: 28 February 2026
Accepted manuscript online: 07 March 2026

PACS:	32.80.Qk	(Coherent control of atomic interactions with photons)
	06.30.Ft	(Time and frequency)
	03.67.Bg	(Entanglement production and manipulation)

Fund: Project supported by the Fundamental and Interdisciplinary Frontier Research Priority Program of the Chinese Academy of Sciences (Grant No. XDB0920000), the National Natural Science Foundation of China (Grant No. 12275331), and the Fund from the Penghuanwu Innovative Research Center (Grant No. 12447101).

Corresponding Authors: Yingdan Wang
E-mail: yingdan.wang@itp.ac.cn

Cite this article:

Rui Zhao(赵睿), and Yingdan Wang(王颖丹) Robust excitation of ²²⁹Th via generalized composite pulses: Compensating generic errors across arbitrary pulse shapes 2026 Chin. Phys. B 35 063201

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Robust excitation of 229Th via generalized composite pulses: Compensating generic errors across arbitrary pulse shapes

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Robust excitation of ²²⁹Th via generalized composite pulses: Compensating generic errors across arbitrary pulse shapes