Optimized pulse for stimulated Raman adiabatic passage on noisy experimental platform

Optimized pulse for stimulated Raman adiabatic passage on noisy experimental platform
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噪声实验平台上受激拉曼绝热通道的优化脉冲

DOI:
10.1088/1674-1056/abfccb
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发表时间:
2021-04
期刊:
影响因子:
1.7
通讯作者:
Cui Jian
Cui Jian
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wang Zhi-Ling;Liu Leiyinan;Cui Jian

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受激拉曼绝热通过(STIRAP)是量子模拟和量子计算中操纵量子态的重要技术。由于实验的不完善,变换保真度在现实中是有限的。在系统地计算了热涨落和中间态瞬时衰变引起的耗散对STIRAP保真度的影响后,通过最优控制方法找到了光镊中里德伯原子的最优控制脉冲,从而提高了STIRAP的保真度。考虑了现有控制激光器的所有限制。采用较短上升时间的控制激光器和相应的总演化时间可以进一步减小跃迁误差。最后,控制脉冲对于理论脉冲形状和实现脉冲形状之间的随机偏差的鲁棒性也通过基于系综平均保真度的额外优化来增强。
Stimulated Raman adiabatic passage (STIRAP) is an important technique to manipulate quantum states in quantum simulation and quantum computation. The transformation fidelity is limited in reality due to experimental imperfections. After systematically calculating the influence of dissipation caused by thermal fluctuations and instantaneous decay of the intermediate state, we find optimized control pulses of Rydberg atom in optical tweezer to increase the STIRAP fidelity via optimal control method. All constraints of currently available control lasers have been taken into account. The transition error can be further depressed when control lasers with shorter rise time and accordingly proper total evolution time are applied. Finally, the robustness of the control pulses with respect to random deviations between the theoretical pulse shape and the implemented ones is also enhanced by additional rounds of optimizations based on ensemble averaged fidelity.
DOI: --
发表时间: 2016
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