Superradiance with local phase-breaking effects
Superradiance with local phase-breaking effects
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DOI：
10.1103/physreva.96.023863
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发表时间：
2017-04
影响因子：
2.9
通讯作者：
Nathan Shammah;Neill Lambert;F. Nori;S. Liberato
中科院分区：
文献类型：
--
作者：
Nathan Shammah;Neill Lambert;F. Nori;S. Liberato
本文研究了一组N个二能级系统在相破缺机制作用下自发辐射的超辐射演化。我们研究了非辐射损失和纯退相产生的动力学，以及它们与自发辐射的相互作用。我们的研究结果表明，在许多固态腔量子电动力学实验相关的参数区域，即使与一个退相速率远远快于一个单一的两能级系统的辐射寿命，一个次优的集体超荧光爆发仍然是可观察到的。我们也将我们的理论应用于稀激发制度，通常用于描述固态系统中的光激发。在这种情况下，激发可以用亮玻色子和暗玻色子准粒子来描述。我们展示了如何在这个制度的退相和损失的影响转化为模间散射率和准粒子寿命。
We study the superradiant evolution of a set of N two-level systems spontaneously radiating under the effect of phase-breaking mechanisms. We investigate the dynamics generated by non-radiative losses and pure dephasing, and their interplay with spontaneous emission. Our results show that in the parameter region relevant to many solid-state cavity quantum electrodynamics experiments, even with a dephasing rate much faster than the radiative lifetime of a single two-level system, a sub-optimal collective superfluorescent burst is still observable. We also apply our theory to the dilute excitation regime, often used to describe optical excitations in solid-state systems. In this regime, excitations can be described in terms of bright and dark bosonic quasiparticles. We show how the effect of dephasing and losses in this regime translates into inter-mode scattering rates and quasiparticle lifetimes.