Thermodynamics within Optomechanics скачать в хорошем качестве

Thermodynamics within Optomechanics

Frontiers Talk - By Juliette Monsel Abstract: Optomechanical cooling with coherent and squeezed light: The thermodynamic cost of opening the heat valve Ground-state cooling of mechanical motion by coupling to a driven optical cavity has been demonstrated in various optomechanical systems. In our paper, we provide a thermodynamic performance analysis of optomechanical sideband cooling in terms of a heat valve. As performance quantifiers, we examine not only the lowest reachable effective temperature (phonon number) but also the evacuated-heat flow as an equivalent to the cooling power of a standard refrigerator, as well as appropriate thermodynamic efficiencies, which all can be experimentally inferred from measurements of the cavity output light field. Importantly, in addition to the standard optomechanical setup fed by coherent light, we investigate two recent alternative setups for achieving ground-state cooling: replacing the coherent laser drive by squeezed light or using a cavity with a frequency-dependent (Fano) mirror. We study the dynamics of these setups within and beyond the weak-coupling limit and give concrete examples based on parameters of existing experimental systems. By applying our thermodynamic framework, we gain detailed insights into these three different optomechanical cooling setups, allowing a comprehensive understanding of the thermodynamic mechanisms at play [1]. [1] J. Monsel, N. Dashti, S. K. Manjeshwar, J. Eriksson, H. Ernbrink, E. Olsson, E. Torneus, W. Wieczorek, J. Splettstoesser: Phys. Rev. A 103, 063519 (2021) ----------------------- Perspectives Talk - By Mauro Paternostro Abstract: Non-equilibrium thermodynamics of quantum processes -- an optomechanical perspective I will give a high-level introduction to non-equilibrium thermodynamics of quantum systems and processes, building the case for its optomechanical exploration. I will illustrate recent achievements and possible ways forward made available by the control that is currently possible in such platform.