Improving the stimulated Raman adiabatic passage via dissipative quantum dynamics.
Improving the stimulated Raman adiabatic passage via dissipative quantum dynamics.
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DOI：
10.1364/oe.24.022847
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发表时间：
2016-05
期刊：
影响因子：
3.8
通讯作者：
Qi‐Cheng Wu;Ye‐Hong Chen;Bi-Hua Huang;Jie Song;Yan Xia;Shi-Biao Zheng
中科院分区：
文献类型：
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作者：
Qi‐Cheng Wu;Ye‐Hong Chen;Bi-Hua Huang;Jie Song;Yan Xia;Shi-Biao Zheng
我们提出了一种利用耗散量子动力学改进受激拉曼绝热通道(STIRAP)的方法，并考虑了退相效应。即使系统的初始状态不是理想的，该方案也可以通过设计的脉冲和失谐量获得快速而稳健的布居转移。以一个具体的三能级系统为例，详细讨论了初始状态的不完善、控制参数的变化以及各种耗散效应对系统稳定性的影响。数值模拟表明，该格式对实验参数的适度波动和激发态相对较大的耗散效应不敏感。此外，占主导地位的耗散因子，即基态的退相效应和不理想的初始态不再是不可取的，事实上，它们是该方案的重要资源。因此，该方案可以为在标准受激拉曼绝热通道或捷径方案失效的强耗散场中实现完全布居转移提供更多的选择。
We propose a method to improve the stimulated Raman adiabatic passage (STIRAP) via dissipative quantum dynamics, taking into account the dephasing effects. Fast and robust population transfer can be obtained with the scheme by the designed pulses and detuning, even though the initial state of the system is imperfect. With a concrete three-level system as an example, the influences of the imperfect initial state, variations in the control parameters, and various dissipation effects are discussed in detail. The numerical simulation shows that the scheme is insensitive to moderate fluctuations of experimental parameters and the relatively large dissipation effects of the excited state. Furthermore, the dominant dissipative factors, namely, the dephasing effects of the ground states and the imperfect initial state are no longer undesirable, in fact, they are the important resources to the scheme. Therefore, the scheme could provide more choices for the realization of the complete population transfer in the strong dissipative fields where the standard stimulated Raman adiabatic passage or shortcut schemes are invalid.