Electromagnetically induced electron transfer between quantum dots via conduction band

Spontaneous emission of a quantum particle under strong Stark interaction with resonant vacuum field

“…The Lamb shift infinitesimality involved is due to the fact that the Rabi frequency is of the first order value of the coupling constant with an electromagnetic field whereas the Lamb shift is of the second order of this constant. Meanwhile, the two-level model of atom successfully describes not only the behavior of atom in the conventional medium, but also in artificial media such as a photon crystal [3], and also describes dynamics of various artificial emitters similar to quantum dot [4] or atom-photon cluster [5]. A distinctive feature of cases described in works [3][4][5] is that they represent a variety of two-quantum processes; with the characteristic Rabi frequencies becoming of the second order of the coupling constants of a quantum particle with either two electromagnetic fields or one electromagnetic field and medium particles.…”

“…In particular, it suppresses spontaneous emission and leads to additional shift of frequency of resonant transition. Our model is applicable to various twoquantum transitions in radiation processes described in works [3][4][5]. As the general model of spontaneous radiation of a quantum particle has been used in our study, the results obtained can affect a variety of various optical effects and methods, for example in spectroscopy, in superradiation, etc.…”

Nutation oscillations of an electromagnetic wave propagating through an ensemble of quantum dots

“…Similar effects accompany the resonant electron transfer between quantum dots produced by the mechanisms described in works [7,10,11]. Nanocluster formation of the described type in a field of nonresonant wave takes place in the diversified systems from quantum dots, but it is rather inconvenient in ordinary atom-molecular systems -the effect essentially depends on the sizes of quantum dots and distance between them.…”

“…A serious of works [1][2][3][4][5][6][7][8][9][10][11] has been devoted to investigating regimes of interactions of an electromagnetic field with quantum dot-type nanostructures and search for an effective mechanism of electromagnetically induced electron transfer. The objective of coherent control (as well as optical, infrared, microwave submillimeter, etc) over electronic processes is significant in many respects.…”

“…Thus, an electron transfer between levels of identical quantum dots at one-photon resonance was considered in [1][2][3][4][5][6][7][8], and [9][10][11][12] treated transfer processes at a combinational and two-photon resonance between discrete levels of an electron system of two quantum dots with essentially different energies. In [13] the case is considered when the levels relating to two different but not necessary identical quantum dots possess approximately similar energy, and it was shown that the system is enough to be affected by electromagnetic field with only one carrier frequency for an electron transfer between quantum dots, and it is not obligatory for any resonance condition to be obeyed.…”