Four-level refrigerator driven by photons

Abstract

We propose a quantum absorption refrigerator driven by photons. The model uses a four-level system as its working substance and couples simultaneously to hot, cold, and solar heat reservoirs. Explicit expressions for the cooling power Q̇(c) and coefficient of performance (COP) η(COP) are derived, with the purpose of revealing and optimizing the performance of the device. Our model runs most efficiently under the tight coupling condition, and it is consistent with the third law of thermodynamics in the limit T→0.

Impact decimation using alignment of granular spheres

“…Current research aims also include developing a comprehensive understanding of these e↵ects on wave propagation. [68][69][70][71][72]…”

Thermodynamic characteristics and research progress of energy-conversion quantum systems

“…在热整流方面, Zhang和Su [170] 研究了平行耦合双 量子点系统热流输运的特性, 在该双量子点模型中, 量子点通过能量依赖隧穿结耦合到两个热源, 如图13 [171,[178][179][180][181][182][183] 、电子-声子相互作用 [184][185][186][187] 、电子-光子相互作用 [188][189][190][191][192][193][194][195] 、电 子-磁子相互作用 [196][197][198] 甚至信息的交换 [199,200] 来实现 能量的收集与转换, 这也使得三端热电器件具有更加 广泛的应用前景.…”

Realising a quantum absorption refrigerator with an atom-cavity system

“…(18). The problem is simplified by taking the interaction Hamiltonian (14) under the LDA and RWA, and making the approximationn −1 a ≈ 0 ≈n σ , leaving just five free parameters governing the phonon population dynamics: λ, η, κ,n b and Γ. We compute the stationary state by representing L as a matrix and solving the eigenvalue equation Lρ ∞ = 0.…”