Dissipation and detection of polaritons in the ultrastrong-coupling regime
Dissipation and detection of polaritons in the ultrastrong-coupling regime
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DOI：
10.1103/physreva.86.063831
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发表时间：
2012-12-26
影响因子：
2.9
通讯作者：
Ogawa, Tetsuo
中科院分区：
文献类型：
--
作者：
Bamba, Motoaki;Ogawa, Tetsuo
本文在不采用系统-库耦合的行波近似的情况下，从理论上研究了在超强光-物质耦合区中的耗散极化激元系统。腔中的光子和物质中的激发分别耦合两个大的谐振子系综（光子库和激子库）。继承了极化激元在超强耦合区的量子统计特性，在整个系统的基态，两个库不是处于真空态，而是压缩和关联的。我们假设水库是在这个非真空状态的主方程和输入输出形式主义与朗之万方程。这两种方法一致地保证了极化子系统衰减到其基态;当极化子系统处于基态时，也没有光子检测。DOI：10.1103/PhysRevA.86.063831
We have investigated theoretically a dissipative polariton system in the ultrastrong light-matter coupling regime without using the rotating-wave approximation on system-reservoir coupling. Photons in a cavity and excitations in matter respectively couple two large ensembles of harmonic oscillators (photonic and excitonic reservoirs). Inheriting the quantum statistics of polaritons in the ultrastrong coupling regime, in the ground state of the whole system, the two reservoirs are not in the vacuum states but they are squeezed and correlated. We presume the reservoirs to be in this nonvacuum state in the master equation and in the input-output formalism with Langevin equations. Both approaches consistently guarantee the decay of the polariton system to its ground state; no photon detection is also obtained when the polariton system is in the ground state. DOI: 10.1103/PhysRevA.86.063831