Superradiant and lasing states in driven-dissipative Dicke models

Superradiant and lasing states in driven-dissipative Dicke models
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驱动耗散迪克模型中的超辐射态和激光态

DOI:
10.1088/1367-2630/aaa11d
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发表时间:
2018
影响因子:
3.3
通讯作者:
Kirton P
Kirton P
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Kirton P

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我们给出了一个模型的非平衡相图,该模型可以通过改变相干和非相干驱动项来演示Dicke-Hep-Lieb超辐射和规则激光。我们发现,相图中对应于超辐射和标准激光的区域总是被一个法线区域分开。我们用基于中小分子密度矩阵排列对称性的精确数值和大分子的二阶累积量方程相结合的方法来分析系统的行为。我们发现超辐射态和激射态的光子分布性质非常相似,但发射光谱有很大的不同。我们还发现,在相干驱动和非相干驱动同时存在的情况下,出现了通向混沌状态的倍周期路径。
We present the non-equilibrium phase diagram of a model which can demonstrate both Dicke–Hepp–Lieb superradiance and regular lasing by varying the coherent and incoherent driving terms We find that the regions in the phase diagram corresponding to superradiance and standard lasing are always separated by a normal region. We analyse the behaviour of the system using a combination of exact numerics based on permutation symmetry of the density matrix for small to intermediate numbers of molecules, and second order cumulant equations for large numbers of molecules. We find that the nature of the photon distribution in the superradiant and lasing states are very similar, but the emission spectrum is very different. We also show that in the presence of both coherent and incoherent driving, a period-doubling route to a chaotic state occurs.
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