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Implementation of Optimal Thermal Radiation Pumps Using Adiabatically Modulated Photonic Cavities
(American Chemical Society Inc, 2021-09)
We numerically implement the concept of thermal radiation pumps in realistic photonic circuits and demonstrate their efficiency to control the radiation current, emitted between two reservoirs with equal temperature. The ...
Adiabatic quantum motors
(Amer Physical Soc, 2013-08-09)
When parameters are varied periodically, charge can be pumped through a mesoscopic conductor without applied bias. Here, we consider the inverse effect in which a transport current drives a periodic variation of an adiabatic ...
Non-adiabatic effects in F + CHD3 reactive scattering
(American Institute of Physics, 2017-06)
The effect of non-adiabatic transitions on the F(2P) + CHD3(ν1) → DF + CHD2 and F(2P) + CHD3(ν1) → HF + CD3 reactions is investigated. The dynamics of the nuclei was simulated using trajectory surface hopping and a ...
Generation of nonground-state condensates and adiabatic paradox
(WILEY-V C H VERLAG GMBH, 2009)
The problem of resonant generation of nonground-state condensates is addressed aiming at resolving the seeming paradox that arises when one resorts to the adiabatic representation. In this picture, the eigenvalues and ...
Enhanced energy harvesting near exceptional points in systems with (pseudo-) PT-symmetry
(Nature, 2021-04)
Exceptional point degeneracies, occurring in non-Hermitian systems, have challenged many well established concepts and led to the development of remarkable technologies. Here, we propose a family of autonomous motors whose ...
Nanomagnet coupled to quantum spin Hall edge: An adiabatic quantum motor
(Elsevier Science, 2015-11)
The precessing magnetization of a magnetic islands coupled to a quantum spin Hall edge pumps charge along the edge. Conversely, a bias voltage applied to the edge makes the magnetization precess. We point out that this ...
Competition between electron and phonon excitations in the scattering of nitrogen atoms and molecules off tungsten and silver metal surfaces
(American Physical Society, 2012-02)
We investigate the role played by electron-hole pair and phonon excitations in the interaction of reactive gas molecules and atoms with metal surfaces. We present a theoretical framework that allows us to evaluate within ...
Periodic compression of an adiabatic gas: Intermittency-enhanced Fermi acceleration
(2013-08-01)
A gas of non-interacting particles diffuses in a lattice of pulsating scatterers. In the finite-horizon case with bounded distance between collisions and strongly chaotic dynamics, the velocity growth (Fermi acceleration) ...
Periodic compression of an adiabatic gas: Intermittency-enhanced Fermi acceleration
(2013-08-01)
A gas of non-interacting particles diffuses in a lattice of pulsating scatterers. In the finite-horizon case with bounded distance between collisions and strongly chaotic dynamics, the velocity growth (Fermi acceleration) ...