论文标题
可调$λ$ -Type系统由超导量子
Tunable $Λ$-type system made of a superconducting qubit pair
论文作者
论文摘要
两个横向耦合和谐振量子的对称状态和反对称状态作为其本征态。在本文中，我们表明单个量子空的参数调制可以在两种状态之间进行直接交换。讨论了其应用于设置$λ$ -Type系统，并讨论了一对强耦合的超导式Transmon Qubits。激发状态是由对称状态制成的，亚稳态是反对称状态。亚稳态状态的相干性仅受纯倾向机制的限制。基于此方案，在数值上证明了$λ$ -Type电磁诱导的透明度，自动镇分裂和刺激的拉曼绝热通道。我们强调了这种超导$λ$ -Type系统中的频率可调性。
Two transversely coupled and resonant qubits form symmetric and antisymmetric states as their eigenstates. In this paper, we show that parametric modulation of an individual qubit enables direct Rabi swapping between the two states. Its application to setup a $Λ$-type system with a pair of strongly coupled superconducting transmon qubits is discussed. The excited state is made of the symmetric state and the metastable state is the antisymmetric state. The coherence of the metastable state is only limited by the pure dephasing mechanism. Based on this scheme, $Λ$-type electromagnetically induced transparency, Autler-Townes splitting and stimulated Raman adiabatic passage are numerically demonstrated. We highlight the large frequency tunability in such superconducting $Λ$-type systems.
