Speaker
Description
We present a theoretical framework to investigate high-harmonic generation (HHG) driven by Squeezed Coherent Thermal States (SCTS) of light. The study is motivated by the complementary roles played by squeezing and thermal fluctuations: while squeezing enhances quantum correlations, thermal photons introduce decoherence and noise, and their coexistence in a coherent background provides a rich platform to explore competing quantum effects in nonlinear light–matter interactions.
The system is modeled as a two-level system driven by a quantized electromagnetic field, treating both the driving field and the emitter fully quantum mechanically. The initial field state is prepared in a SCTS, allowing continuous interplay between the coherent, squeezed vacuum, and thermal driving within a unified description. High-harmonic spectra are formulated in terms of the dipole autocorrelation function and evaluated using exact diagonalization and spectral decomposition, without invoking semiclassical, Floquet, or phase-averaging approximations.
This study establishes a general and flexible framework to systematically examine how coherence, squeezing, and thermal noise jointly influence quantum HHG processes. The study aims to provide insight into the interplay between nonclassical photon statistics and strong light–matter coupling, with direct relevance to cavity and circuit quantum electrodynamics platforms.
| Keyword-1 | High-harmonic gernation |
|---|---|
| Keyword-2 | Rabi Model |
| Keyword-3 | Quantum lights |