Stable Optical Rigidity Based on Dissipative Coupling

腔光力学系统中耗散与色散耦合的结合

Combination of dissipative and dispersive coupling in the cavity optomechanical systems

本研究分析了兼具耗散与色散耦合的Fabry-Perot腔光力学系统，发现其共振泵浦下可产生纯耦合不具备的光学刚度，可实现优于SQL的微力检测及更宽参数范围的可控光压挤压。

Criticality and Rigidity of Dissipative Discrete Time Crystals in Solids

We consider a dissipative quantum Ising model periodically driven by a train of $π$-pulses and investigate dissipative discrete time crystals (DTCs) in solids. In this model, the interaction between the spins spontaneously breaks the discrete time translation symmetry, giving rise to a dissipative DTC, where two ferromagnetic states are switched alternately by each pulse. We microscopically describe the generic dissipation due to thermal contact to an equilibrium heat bath using the Bloch-Redfield equation. In contrast to other DTC studies, this dissipation stabilizes, rather than destroys, th…

Stable classical structures in dissipative quantum chaotic systems

We study the stability of classical structures in chaotic systems when a dissipative quantum evolution takes place. We consider a paradigmatic model, the quantum baker map in contact with a heat bath at finite temperature. We analyze the behavior of the purity, fidelity and Husimi distributions corresponding to initial states localized on short periodic orbits (scar functions) and map eigenstates. Scar functions, that have a fundamental role in the semiclassical description of chaotic systems, emerge as very robust against environmental perturbations. This is confirmed by the study of other st…

3D classical and quantum stable structures of dissipative systems

We study the properties of classical and quantum stable structures in a 3D parameter space corresponding to the dissipative kicked top. This is a model system in quantum and classical chaos that gives a starting point for many body examples. We are able to identify the influence of these structures in the spectra and eigenstates of the corresponding (super)operators. This provides with a complementary view with respect to the typical 2D parameter space systems found in the literature. Many properties of the eigenstates, like its localization behaviour can be generalized to this higher dimensio…

耗散三能级系统介导的稳定充电

Dissipative qutrit-mediated stable charging

提出利用三能级系统耗散实现量子电池单向稳定充电，避免自发放电，并推导有效主方程及优化条件，在多种电池模型中验证。

耗散Floquet光学晶格中连续谱束缚态的生成与稳定化

Generation and Stabilization of Bound States in the Continuum in Dissipative Floquet Optical Lattices

本文提出一维耗散Floquet晶格中由暗Floquet态生成稳定连续谱束缚态的新机制，揭示提高驱动频率或耗散强度可增强其稳定性，并证明其在非线性区域仍稳健存在，为实验实现提供了理论依据。