论文标题
Qubit-Plasmon-Phonon Ultrastrong耦合系统中的光子和声子统计
Photon and phonon statistics in a qubit-plasmon-phonon ultrastrong coupling system
论文作者
论文摘要
我们研究了超局势耦合方案中Qubit-Plasmon-Phonon混合系统的光子/声子统计。引入的Qubit耦合会导致平等保存和不连续的情况。我们采用一种分析近似方法来保存奇偶校验，以揭示光子和声子的统计行为。这表明光子和声子都以相同的频率显示出强的抗抗启动。即使光子/声子的束性能占据了所考虑的频率的主要区域，但声子倾向于在光子强束区域内弱反抗。相比之下，人们可以发现，在奇偶校验中，光子和声音的相关函数的配置通过平价破坏将朝向中心频率挤压，这直接触发了低频区域的不同方面的不同方面的反向统计行为，以及在其他频率区域的强束构图。光子 - 光子互相关函数还表现出相似的奇偶校验诱导的差异，这表明非连接的奇偶校验诱导了光子 - phonon束束行为。我们最终用不同的驱动频率分析了延迟的二阶相关函数，这说明了引人注目的振荡揭示了同时发生多种激发的发生。
We study photon/phonon statistics of a qubit-plasmon-phonon hybrid system in the ultrastrong coupling regime. The introduced qubit coupling causes parity conserving and non-conserving situations. We employ an analytic approximation approach for the parity conserving case to reveal the statistical behaviors of photons and phonons. It indicates that both photons and phonons show strong antibunching at the same frequency. Even though the bunching properties of photons/phonons occupy the dominant regions of the considered frequencies, phonons tend to weakly antibunching within the photonic strong-bunching area. In contrast, one can find that the configurations of correlation functions for both photons and phonons in the parity conserving case are squeezed towards the central frequency by parity breaking, which directly triggers the reverse statistical behaviors for the different parties at the low-frequency regions and the strong bunching properties at other frequency regions. The photon-phonon cross-correlation function also demonstrates similar parity-induced differences, indicating that the non-conserving parity induces the photon-phonon bunching behavior. We finally analyze the delayed second-order correlation function with different driving frequencies, which illustrates striking oscillations revealing the occurrence of simultaneous multiple excitations.
