Open AccessElectromagnetic radiation amplification by means of a driven two-level system damped by broadband squeezed vacuum reservoir
Author(s) -
N. N. Bogolyubov,
A. V. Soldatov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1560/1/012001
Subject(s) - physics , electromagnetic field , monochromatic color , electromagnetic radiation , semiclassical physics , dipole , degenerate energy levels , radiation , quantum electrodynamics , laser , quantum , optics , quantum mechanics
It is shown that a two-level quantum system with broken inversion symmetry possessing dipole moment operator with permanent non-equal diagonal matrix elements, driven by external semiclassical monochromatic high-frequency electromagnetic (laser) field and damped by broadband squeezed vacuum reservoir can amplify or absorb weak probe electromagnetic radiation field of much lower frequency depending on the reference phase of the squeezed field. Varying the degree of squeezing allows to alter the magnitude of the absorption or amplification rate.