论文标题
在存在耗散和Ornstein-uhlenbeck的情况下，超级绝热刺激的拉曼绝热通道的性能
Performance of superadiabatic stimulated Raman adiabatic passage in the presence of dissipation and Ornstein-Uhlenbeck dephasing
论文作者
论文摘要
在本文中，我们评估了两种超热刺激的拉曼绝热通道（搅拌）方案的性能，这些方案在耗散和耗散和孔子脉冲下以及能量水平上的ornstein-uhlenbeck噪声下得出。我们发现，对于小的stokes和泵脉冲振幅，人口转移主要是通过反浸润脉冲直接实现的，而对于大幅度，传统的搅拌路径占主导地位。这种“对冲”导致了在有损中间状态下对耗散的显着鲁棒性。对于小脉冲幅度和增加的噪声相关时间，由于主要的抵绝热脉冲的影响更大，而对于大型脉冲幅度，搅拌路径主导的大脉冲幅度，效率更高，用于中间相关时间（与脉冲持续时间相比）。对于高斯超绝热搅拌协议，我们还研究了泵和stokes脉冲之间延迟的效果，发现在噪声的存在下，性能得到改善以增加延迟。我们得出结论，即使在严重的噪声条件下，具有适当选择的延迟和SIN-COS协议的高斯协议也表现出色。由于搅拌在现代量子技术中起着至关重要的作用，因此目前的工作预计将具有广泛的应用。
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.
