Enhancing the fidelity of stimulated Raman transitions with simple phase shifts

Fuente: arXiv
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Autori principali: Wang, Hua-Yang, Chen, Xu-Yang, Wang, Zhen-Yu
Natura: Preprint
Pubblicazione: 2025
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author Wang, Hua-Yang
Chen, Xu-Yang
Wang, Zhen-Yu
author_facet Wang, Hua-Yang
Chen, Xu-Yang
Wang, Zhen-Yu
contents We demonstrate that in stimulated Raman transitions, introducing one or two simple phase shifts to the control fields significantly enhances the fidelity of state manipulation while simultaneously reducing leakage to the intermediate excited state. Our approach achieves high-fidelity quantum gate operations between the two target states under arbitrary detuning conditions. Notably, the average population in the intermediate excited state is approximately halved, without extending the overall evolution time. Additionally, our method exhibits greater robustness to static amplitude and detuning errors compared to conventional adiabatic elimination techniques, and maintains higher fidelity even in the presence of dissipation.
format Preprint
id arxiv_https___arxiv_org_abs_2501_17093
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Enhancing the fidelity of stimulated Raman transitions with simple phase shifts
Wang, Hua-Yang
Chen, Xu-Yang
Wang, Zhen-Yu
Quantum Physics
We demonstrate that in stimulated Raman transitions, introducing one or two simple phase shifts to the control fields significantly enhances the fidelity of state manipulation while simultaneously reducing leakage to the intermediate excited state. Our approach achieves high-fidelity quantum gate operations between the two target states under arbitrary detuning conditions. Notably, the average population in the intermediate excited state is approximately halved, without extending the overall evolution time. Additionally, our method exhibits greater robustness to static amplitude and detuning errors compared to conventional adiabatic elimination techniques, and maintains higher fidelity even in the presence of dissipation.
title Enhancing the fidelity of stimulated Raman transitions with simple phase shifts
topic Quantum Physics
url https://arxiv.org/abs/2501.17093