Stationary Inversion of a Two Level System Coupled to an Off-Resonant Cavity with Strong Dissipation
Stationary Inversion of a Two Level System Coupled to an Off-Resonant Cavity with Strong Dissipation
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DOI：
10.1103/physrevlett.107.193601
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发表时间：
2011-10-31
影响因子：
8.6
通讯作者：
Carmichael, H. J.
中科院分区：
文献类型：
--
作者：
Hughes, S.;Carmichael, H. J.
我们提出了一个非共振激发方案，实现了显着的平稳反转在两个能级系统。所创建的反转利用腔辅助的双光子共振来增强非线性腔QED的多光子制度，并且即使在半导体环境中也能存活，其中腔衰减速率与腔-点耦合速率相当。激子人口大于0.75的现实衰变和纯退相的存在下获得。量子轨道模拟和主方程计算有助于阐明基本的物理和描述简化速率方程模型的局限性。反演和多光子腔QED的实验签名预测的荧光强度和二阶相关函数作为驱动功率的函数测量。
We present an off-resonant excitation scheme that realizes pronounced stationary inversion in a two level system. The created inversion exploits a cavity-assisted two-photon resonance to enhance the multiphoton regime of nonlinear cavity QED and survives even in a semiconductor environment, where the cavity decay rate is comparable to the cavity-dot coupling rate. Exciton populations of greater than 0.75 are obtained in the presence of realistic decays and pure dephasing. Quantum trajectory simulations and master equation calculations help elucidate the underlying physics and delineate the limitations of a simplified rate equation model. Experimental signatures of inversion and multiphoton cavity QED are predicted in the fluorescence intensity and second-order correlation function measured as a function of drive power.