111 citations · 257 across the 10 of their papers we have counts for
10 papers
Rydberg-dressed atoms in BCS-state
T. Espinosa-Ortega, I. A. Shelykh
We consider a system consisting of Rydberg dressed atoms interacting with BEC condensate of diatomic molecules. Using random phase approximation (RPA) we calculate the effective in…
Tuning of Zero Energy States in Quantum Dots of Silicene and Bilayer Graphene by Electric Field
Hazem Abdelsalam, T. Espinosa-Ortega, Igor Lukyanchuk
Electronic properties of triangular and hexagonal nano-scale quantum dots (QDs) of Silicene and bilayer graphene are studied. It is shown that the low-energy edge-localized electro…
Electronic and Magnetic Properties of Graphite Quantum Dots
Hazem Abdelsalam, Tania Espinosa-Ortega, Igor Lukyanchuk
We study the electronic and magnetic properties of multilayer quantum dots (MQDs) of graphite in the nearest-neighbor approximation of tight-binding model. We calculate the electro…
Superconductivity in Semiconductor Structures: the Excitonic Mechanism
E. D. Cherotchenko, T. Espinosa-Ortega, A. V. Nalitov +2
We study theoretically the effect of the fermion and boson densities on the superconductivity transition critical temperature of a two dimensional electron gas (2DEG), wher…
Perceptrons with Hebbian learning based on wave ensembles in plastic potentials
T. Espinosa-Ortega, T. C. H. Liew
A general scheme to realize a perceptron for hardware neural networks is presented, where multiple interconnections are achieved by a superposition of Schrodinger waves. Spatially…
Semiconductor cavity QED: Bandgap induced by vacuum fluctuations
T. Espinosa-Ortega, O. Kyriienko, O. V. Kibis +1
We consider theoretically a semiconductor nanostructure embedded in one-dimensional microcavity and study the modification of its electron energy spectrum by the vacuum fluctuation…
Optical diode based on exciton-polaritons
T. Espinosa-Ortega, T. C. H. Liew, I. A. Shelykh
We propose theoretically an optical diode based on exciton-polaritons in semiconductor microcavities. A flow of polaritons in the bistable regime is used to send signals through an…
Magnetic properties of graphene quantum dots
T. Espinosa-Ortega, I. A. Luk'yanchuk, Y. G. Rubo
Using the tight-binding approximation we calculated the magnetic susceptibility of graphene quantum dots (GQD) of different geometrical shapes and sizes, smaller than the magnetic…
A complete architecture of integrated photonic circuits based on AND and NOT logic gates of exciton-polaritons in semiconductor microcavities
T. Espinosa-Ortega, T. C. H. Liew
In this letter we introduce a complete photonic logic gate architecture, making use of the non-linear and spintronic properties of exciton-polaritons in semiconductor microcavities…
BCS pairing in fully repulsive fermion mixtures
T. Espinosa-Ortega, O. Kyriienko, I. A. Shelykh
We consider a mixture of two neutral cold Fermi gases with repulsive interactions. We show that in some region of the parameter space of the system the effective attraction between…