Utilizing an adiabatic approximation method, a bipartite qudit-oscillator Hamiltonian is studied for low-spin values in both strong and ultrastrong coupling regimes. The quasiprobability densities on the hybrid factorized phase space are introduced. Integrating over a sector of the composite phase space, the quasiprobability distributions of its complementary subsystem are recovered. In the strong coupling regime, the qudit entropy displays a pattern of quasiperiodic collapses and revivals, where the latter coincide with locally minimum entropy configurations. Starting with a bipartite factorizable initial state, we observe that almost pure spin kitten type states dynamically develop at near-null values of entropy. The Hilbert-Schmidt distance measure of these states puts them metrically far away from the initial state. Other localized spin states form at locally minimum but significantly large values of entropy. The evolution to the nonclassical transitory spin states is displayed via the diagonal spin ${\mathrm{P}}_{\mathcal{Q}}$ representation. As another manifestation of nonclassicality the emergence of the spin-squeezed states during the bipartite evolution is observed. In the ultrastrong coupling domain, a large number of interaction-dependent modes and their harmonics are generated. The consequent randomization of the phases eliminates the quasiperiodicity of the system which is now driven towards a stabilization of the entropy that also undergoes stochastic fluctuations around a suitably stabilized value. In both the strong and ultrastrong coupling realms, antibunching of the photoemission events is realized particularly for the small spin values.

中文翻译：

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强耦合自旋振荡器系统中的广义自旋小猫状态

利用绝热近似方法，研究了二分量子振荡器哈密顿量在强和超强耦合状态下的低自旋值。引入了混合分解相空间上的准概率密度。对复合相空间的一个扇区进行积分，恢复其互补子系统的准概率分布。在强耦合状态下，qudit 熵显示出准周期性崩溃和复兴的模式，后者与局部最小熵配置重合。从二分可分解初始状态开始，我们观察到几乎纯自旋小猫类型的状态在熵的近零值处动态发展。这些状态的 Hilbert-Schmidt 距离度量使它们在度量上远离初始状态。其他局部自旋状态以局部最小值但显着大的熵值形成。通过对角自旋显示向非经典过渡自旋态的演化${\mathrm{磷}}_{\mathcal{问}}$表示。作为非经典性的另一种表现，观察到在二分进化过程中出现了自旋压缩态。在超强耦合域中，会产生大量依赖于相互作用的模式及其谐波。随后的相位随机化消除了系统的准周期性，该系统现在被驱动趋向于熵的稳定，该熵也在适当稳定的值附近经历随机波动。在强耦合和超强耦合领域，特别是对于小自旋值，实现了光电发射事件的反聚集。