人工相干纳米结构中的λ构型设计
Design of a Lambda configuration in artificial coherent nanostructures
摘要：
在人造原子中实现三能级Lambda系统将允许在固态领域中执行典型的量子光学的高级控制任务，其中光子在$\mathrm{μm}$/mm范围内。然而，硬件限制设置了障碍，因为从退相干的保护往往是冲突的有效耦合到外部领域。我们解决的问题进行常规的受激拉曼绝热通道（STIRAP）中存在的低频噪声。我们提出了两种策略来击败退相干，基于“最佳对称性破缺”和动态解耦。我们提出了如何应用于超导人造原子的不同实现，强调非马尔可夫性的关键作用。
英文摘要：
The implementation of a three-level Lambda System in artificial atoms would allow to perform advanced control tasks typical of quantum optics in the solid state realm, with photons in the $\mathrm{μm}$/mm range. However hardware constraints put an obstacle since protection from decoherence is often conflicting with efficient coupling to external fields. We address the problem of performing conventional STImulated Raman Adiabatic Passage (STIRAP) in the presence of low-frequency noise. We propose two strategies to defeat decoherence, based on "optimal symmetry breaking" and dynamical decoupling. We suggest how to apply to the different implementations of superconducting artificial atoms, stressing the key role of non-Markovianity.
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