Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Atabek, Osman"'
The present work explores quantitative limits to the Single-Active Electron (SAE) approximation, often used to deal with strong-field ionization and subsequent attosecond dynamics. Using a time-dependent multi\-configuration approach, specifically a
Externí odkaz:
http://arxiv.org/abs/2209.07174
Motivated by the major role funneling dynamics plays in light-harvesting processes, we built some laser control strategies inspired from basic mechanisms such as interference and kicks, and apply them to the case of pyrazine. We are studying the inte
Externí odkaz:
http://arxiv.org/abs/2205.12163
Autor:
Devolder, Adrien, Desouter-Lecomte, Michèle, Atabek, Osman, Luc-Koenig, Eliane, Dulieu, Olivier
Publikováno v:
Phys. Rev. A 103, 033301 (2021)
We have studied the formation of ultracold RbSr molecules with laser pulses. After discussing the advantages of the Mott insulator phase for the control with pulses, we present two classes of strategies. The first class involves two electronic states
Externí odkaz:
http://arxiv.org/abs/2011.12813
Autor:
Devolder, Adrien, Luc-Koenig, Eliane, Atabek, Osman, Desouter-Lecomte, Michèle, Dulieu, Olivier
Publikováno v:
Phys. Rev. A 98, 053411 (2018)
Ultracold paramagnetic and polar diatomic molecules are among the promising systems for quantum simulation of lattice-spin models. Unfortunately, their experimental observation is still challenging. Based on our recent \textit{ab-initio} calculations
Externí odkaz:
http://arxiv.org/abs/1806.10346
Autor:
Mangaud, Etienne, Puthumpally-Joseph, Raijumon, Sugny, Dominique, Meier, Christoph, Atabek, Osman, Desouter-Lecomte, Michèle
Optimal control theory is implemented with fully converged hierarchical equations of motion (HEOM) describing the time evolution of an open system density matrix strongly coupled to the bath in a spin-boson model. The populations of the two-level sub
Externí odkaz:
http://arxiv.org/abs/1711.05162
Autor:
Puthumpally-Joseph, Raiju, Mangaud, Etienne, Chevet, Vincent, Desouter-Lecomte, Michèle, Sugny, Dominique, Atabek, Osman
Publikováno v:
Phys. Rev. A 97, 033411 (2018)
Referring to a Fano-type model qualitative analogy we develop a comprehensive basic mechanism for the laser control of the non-Markovian bath response in strongly coupled Open Quantum Systems (OQS). A converged Hierarchy Equations Of Motion (HEOM) is
Externí odkaz:
http://arxiv.org/abs/1710.07188
Publikováno v:
Phys. Rev. A 95, 063409 (2017)
A semiclassical model supporting the destructive interference interpretation of zero-width resonances (ZWR) is extended to wavelengths inducing c_minus-type curve crossing situations in Na2 strong field dissociation. This opens the possibility to get
Externí odkaz:
http://arxiv.org/abs/1704.08211
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 50, 234002 (2017)
H$_2^+$ is an ideal candidate for a detailed study of strong field coherent control strategies inspired by basic mechanisms referring to some specific photodissociation resonances. Two of them are considered in this work, namely: Zero-width resonance
Externí odkaz:
http://arxiv.org/abs/1703.05618
Publikováno v:
Phys. Rev. A 94, 043409 (2016)
In molecular photodissociation, some specific combinations of laser parameters (wavelength and intensity) lead to unexpected Zero-Width Resonances (ZWR), with in principle infinite lifetimes. Their interest in inducing basic quenching mechanisms have
Externí odkaz:
http://arxiv.org/abs/1607.07371
Autor:
Finkelstein-Shapiro, Daniel, Calatayud, Monica, Atabek, Osman, Mujica, Vladimiro, Keller, Arne
Publikováno v:
Phys. Rev. A 93, 063414 (2016)
We obtain an explicit solution for the stationary state populations of a dissipative Fano model, where a discrete excited state is coupled to a continumm set of states; both excited set of states are reachable by photo-excitation from the ground stat
Externí odkaz:
http://arxiv.org/abs/1509.04653