论文标题
光子带边缘附近的动力学：超出旋转波近似的强耦合效应
Dynamics Near a Photonic Band-Edge: Strong Coupling Effects Beyond Rotating-Wave Approximation
论文作者
论文摘要
我们研究了量子发射极的动力学，该量子发射器与二维光子晶体结合，具有有限的带宽，边缘锋利和货车霍夫奇异性。我们根据最近引入的开放量子系统的NCA动力学图，研究了光子环境的强系统浴耦合和非马克维亚度的效果。我们表明，动力学在光子带边缘附近的几个特征特征，例如自发发射的冻结和最大的轻度纠缠，在系统轴耦合中存在反旋转项的情况下，在旋转波近似之外进行了反旋转术语。此外，通过计算量子发射极的光谱函数，我们评论了Atom-Photon Bound-State所起的作用，并表明，一旦旋转波浪近似放松，这将获得更大的寿命。
We study the dynamics of a quantum emitter coupled to a two-dimensional photonic crystal featuring a finite bandwidth with sharp edges and a Van-Hove singularity. We study the effect of strong system-bath coupling and non-Markovianity of the photonic environment using a nonperturbative approach based on the recently introduced NCA dynamical map for open quantum systems. We show that several characteristic features of the dynamics near a photonic band-edge such as the freezing of spontaneous emission and the maximum light-matter entanglement, get strongly modified in presence of counter-rotating terms in the system-bath coupling, beyond the rotating-wave approximation. Furthermore, by computing the spectral function of the quantum emitter we comment on the role played by atom-photon bound-state and show that this acquires a much larger lifetime once the rotating-wave approximation is relaxed.
