论文标题
超导巨型原子波导QED：Ultrastrong耦合方案中的量子Zeno和抗Zeno效应
Superconducting giant atom waveguide QED: Quantum Zeno and Anti-Zeno effects in ultrastrong coupling regime
论文作者
论文摘要
巨型原子系统是量子光学元件的新范式，其中不可用传统的偶极子近似。在本文中，我们通过通过两个耦合点将超导电路耦合到传输线来构建人造巨型原子模型。在Ultrastrong耦合方案中，我们表明，巨型原子的羔羊移位是由不可忽略的反旋转原子 - 波导耦合术语引起的，它将修改其耗散过程。此外，我们研究了巨大原子的大小作为敏感控制器的量子Zeno和抗Zeno效应。具体而言，通过比较临界测量区间和巨大原子的寿命，我们阐明了发生量子反式效应的条件。我们希望我们的工作对于在研究量子力学的基本问题中应用巨型原子系统有用。
The giant atom system is a new paradigm in quantum optics, in which the traditional dipole approximation is not available. In this paper, we construct an artificial giant atom model by coupling a superconducting circuits to a transmission line by two coupling points. In the ultrastrong coupling regime, we show that the Lamb shift of the giant atom, which is induced by the non-negligible counter-rotating atom-waveguide coupling term, will modify its dissipation process. Furthermore, we investigate quantum Zeno and anti-Zeno effect where the size of the giant atom serves as a sensitive controller. Specifically, by comparing the critical measurement interval and the life time of the giant atom, we clarify the condition for the occurring of quantum anti-Zeno effect. We hope our work is useful for the application of giant atom system in the investigation of fundamental problems of quantum mechanics.
