存在耗散和Ornstein-Uhlenbeck退相时超绝热受激喇曼绝热通道的性能
Performance of superadiabatic stimulated Raman adiabatic passage in the presence of dissipation and Ornstein-Uhlenbeck dephasing
摘要：
在本文中，我们评估了两个超绝热受激拉曼绝热通道（STIRAP）协议来自高斯和sin-cos脉冲，耗散和Ornstein-Uhlenbeck噪声下的能级。我们发现，对于小振幅的斯托克斯和泵浦脉冲，人口转移主要是直接通过counterdiabatic脉冲，而大振幅的传统STIRAP路径占主导地位。这种“对冲”导致了显着的鲁棒性对损耗的中间状态的耗散。对于小脉冲幅度和增加的噪声相关时间，性能降低，因为占主导地位的反绝热脉冲受到更多的影响，而对于大脉冲幅度，其中STIRAP路径占主导地位，对于中间相关时间（与脉冲持续时间相比），效率降低得更多。对于高斯超绝热STIRAP协议，我们还研究了泵浦脉冲和斯托克斯脉冲之间的延迟的影响，发现在噪声存在下，性能得到改善，增加延迟。我们的结论是，高斯协议与适当选择的延迟和正弦余弦协议执行得很好，即使在严重的噪声条件下。目前的工作预计将有广泛的应用，因为STIRAP在现代量子技术中发挥着至关重要的作用。
英文摘要：
In this paper we evaluate the performance of two superadiabatic stimulated Raman adiabatic passage (STIRAP) protocols derived from Gaussian and sin-cos pulses, under dissipation and Ornstein-Uhlenbeck noise in the energy levels. We find that for small amplitudes of Stokes and pump pulses, the population transfer is mainly achieved directly through the counterdiabatic pulse, while for large amplitudes the conventional STIRAP path dominates. This kind of "hedging" leads to a remarkable robustness against dissipation in the lossy intermediate state. For small pulse amplitudes and increasing noise correlation time the performance is decreased, since the dominant counterdiabatic pulse is affected more, while for large pulse amplitudes, where the STIRAP path dominates, the efficiency is degraded more for intermediate correlation times (compared to the pulse duration). For the Gaussian superadiabatic STIRAP protocol we also investigate the effect of delay between pump and Stokes pulses and find that under the presence of noise the performance is improved for increasing delay. We conclude that the Gaussian protocol with suitably chosen delay and the sin-cos protocol perform quite well even under severe noise conditions. The present work is expected to have a broad spectrum of applications, since STIRAP has a crucial role in modern quantum technology.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
