论文标题
单原子MASER具有用于人口反转的工程电路
Single-atom maser with engineered circuit for population inversion
论文作者
论文摘要
我们为MASER提供了一个三级transmon超导性人工原子的蓝图。该系统可以通过两光子过程连贯地泵送，并且为了实现高种群倒置，亚稳态状态的松弛速率通过辅助低Q腔与Transmon激发态之间的过渡相结合的辅助低Q腔。我们在数值上表明，这种MASER可以在与超级波斯顿光子统计的中间耦合方案中以及在统计量为统计学的强耦合方向上同时运行。对于前者，Maser表现出无阈值的行为，对于后者，有一个明确定义的抽水阈值。辅助谐振器的一个有用的副作用是，它允许克服泵的光子阻滞效应，否则可以防止高光子种群。最后，我们观察到稳态WIGNER函数的双重性以及某些参数的自quench效应。
We present a blueprint for a maser with a single three-level transmon superconducting artificial atom. The system can be pumped coherently via a two-photon process, and to achieve high population inversion, the relaxation rate of the metastable state is increased via an auxiliary low-Q cavity coupled to a transition between the transmon excited states. We show numerically that such a maser can operate both in the intermediate coupling regime with super-Poissonian photon statistics and in the strong coupling regime, where the statistics is sub-Poissonian. For the former, the maser exhibits thresholdless behavior and for the latter, there is a well-defined pumping threshold. A useful side-effect of the auxiliary resonator is that it allows to overcome the photon blockade effect for the pump, which would otherwise prevent high photon population. Finally, we observe the bistability of the steady-state Wigner function and the self-quenching effect for some parameters.
