Zobrazeno 1 - 10
of 428
pro vyhledávání: '"Paspalakis, Emmanuel"'
Autor:
Asadpour, Seyyed Hossein, Abbas, Muqaddar, Hamedi, Hamid R., Ruseckas, Julius, Paspalakis, Emmanuel, Asgari, Reza
We propose a scheme aimed at achieving spatio-spectral control over spontaneous emission within a four-level atom-light coupling system interacting with optical vortices carrying orbital angular momentum (OAM). The atom comprises a ground level and t
Externí odkaz:
http://arxiv.org/abs/2408.12700
Publikováno v:
Journal of Applied Physics 134, 094302 (2023)
In this article, we use spatially modulated control fields to increase the four-wave mixing efficiency in a four-subband semiconductor asymmetric double quantum well, motivated by similar works in atomic systems. Using a simplified version of the pro
Externí odkaz:
http://arxiv.org/abs/2312.16466
Publikováno v:
Physical Review A 108, 062425 (2023)
We consider a two-level system with a fixed energy spacing (detuning) between the two levels and a single transverse control field which can take values between zero and a maximum amplitude. Using Pontryagin's maximum principle, we completely solve t
Externí odkaz:
http://arxiv.org/abs/2312.16744
Publikováno v:
Physical Review A 107, 052606 (2023)
We derive shortcuts to adiabaticity maximizing population transfer in a three-level $\Lambda$ quantum system, using the spin to spring mapping to formulate the corresponding optimal control problem on the simpler system of a classical driven dissipat
Externí odkaz:
http://arxiv.org/abs/2312.16643
Publikováno v:
Philosophical Transactions of the Royal Society A 380, 20210283 (2022)
We use optimal control theory to obtain shortcuts to adiabaticity which maximize population transfer in a three-level STIRAP system, for a given finite duration of the process and specified dissipation rate at the intermediate state. We fix the sum o
Externí odkaz:
http://arxiv.org/abs/2212.13231
Publikováno v:
Journal of Physics A: Mathematical and Theoretical 55, 045302 (2022)
We use optimal control theory to show that for a closed $\Lambda$-system where the excited intermediate level decays to the lower levels with a common large rate, the optimal scheme for population transfer between the lower levels is actually optical
Externí odkaz:
http://arxiv.org/abs/2212.13212
Publikováno v:
Physical Review A 105, 052604 (2022)
We consider a nanostructure consisting of a semiconductor quantum dot coupled to a metal nanoparticle, and show with numerical simulations that the exciton state of the quantum dot can be robustly generated from the ground state even for small interp
Externí odkaz:
http://arxiv.org/abs/2212.13204
Publikováno v:
In Optics Communications 1 January 2025 574
Publikováno v:
Journal of Applied Physics 129, 223104 (2021)
We study the potential for controlled transfer of population to the biexciton state of a semiconductor quantum dot coupled with a metal nanoparticle, under the influence of an electromagnetic pulse with hyperbolic secant shape, and derive analytical
Externí odkaz:
http://arxiv.org/abs/2112.13773
Publikováno v:
Physical Review A 104, 033101 (2021)
We use optimal control in order to find the optimal shapes of pulses maximizing the population transfer between two bound states which are coupled via a continuum of states. We find that the optimal bounded controls acquire the bang-interior and inte
Externí odkaz:
http://arxiv.org/abs/2112.13768