Research output: Contribution to journal › Article › peer-review
Formation of the stopped polarization pulse in a rectangular quantum well. / Белов, Павел Алексеевич; Архипов, Ростислав Михайлович.
In: Micro and Nanostructures, Vol. 180, No. 8, 207607, 08.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Formation of the stopped polarization pulse in a rectangular quantum well
AU - Белов, Павел Алексеевич
AU - Архипов, Ростислав Михайлович
PY - 2023/8
Y1 - 2023/8
N2 - The induced polarization oscillations in a one-dimensional rectangular quantum well are modeled by a numerical solution of the time-dependent Schrödinger equation. The finite-difference discretization over time is realized in the framework of the Crank-Nicolson algorithm, whereas over the spatial coordinate it is combined with the exterior complex-scaling technique. A formation of the harmonic oscillations of the dipole moment by an incident short unipolar pulse is shown. It is obtained that the frequency of oscillations is solely defined by the energy of the main resonant transition. Moreover, if two such short unipolar pulses are delayed by a half-period of the oscillation, then these oscillations can be abruptly induced and stopped. Thus, the so-called stopped polarization pulse is obtained. It is shown that both the amplitude and the duration of the incident unipolar pulse, contributing to the so-called electric pulse area, define the impact of the incident pulse on the quantum system.
AB - The induced polarization oscillations in a one-dimensional rectangular quantum well are modeled by a numerical solution of the time-dependent Schrödinger equation. The finite-difference discretization over time is realized in the framework of the Crank-Nicolson algorithm, whereas over the spatial coordinate it is combined with the exterior complex-scaling technique. A formation of the harmonic oscillations of the dipole moment by an incident short unipolar pulse is shown. It is obtained that the frequency of oscillations is solely defined by the energy of the main resonant transition. Moreover, if two such short unipolar pulses are delayed by a half-period of the oscillation, then these oscillations can be abruptly induced and stopped. Thus, the so-called stopped polarization pulse is obtained. It is shown that both the amplitude and the duration of the incident unipolar pulse, contributing to the so-called electric pulse area, define the impact of the incident pulse on the quantum system.
KW - Complex scaling
KW - Crank-Nicolson method
KW - Dipole moment
KW - Polarization
KW - Quantum well
KW - Schrödinger equation
UR - https://www.mendeley.com/catalogue/e1fd0c24-f05d-3749-b703-24bf838f9b65/
U2 - 10.1016/j.micrna.2023.207607
DO - 10.1016/j.micrna.2023.207607
M3 - Article
VL - 180
JO - Micro and Nanostructures
JF - Micro and Nanostructures
SN - 2773-0131
IS - 8
M1 - 207607
ER -
ID: 105167797