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Integral equation technique of classical electrodynamics and the Landauer-Buttiker formalism of quantum transport were applied to develop electromagnetic scattering theory for a finite-length nanowire with embedded mesoscopic object. The theory is valid for a rather wide range of nanostructures, such as nanowires, nano-loops, nano-ribbons, Vivaldi antennas, etc.
In this paper, we recast the problem of interaction between a classical electromagnetic field and a pair of quantum dots coupled through dipoledipole interaction in terms of an equivalent circuit model. Then, we use the introduced circuit to investigate the electromagnetic scattering from a pair of interacting quantum dots. Equivalent circuits for complex systems of quantum dots greatly simplify the...
The concept of electromagnetic crosstalk in nano-circuits via quantum entanglement between the elements is considered. Manifestation of this effect in electromagnetic compatibility (EMC) and a solution for for its suppression are discussed.
Concept of edge polarizability produced by support of the edge quantum states is demonstrated by the example of graphene nanoribbon with zigzag edge configuration. This concept allows to formulate physically correct edge conditions for electromagnetic field in nanostructures instead of ordinary Meixner conditions in classical electrodynamics.
The solution of the Poisson equation is an essential stage in the calculation of quantum properties of materials as it appears both in the electrostatic Hartree term and in the Fock exchange operator. We discuss here an integral method for the calculation of Poisson potential and demonstrate its integration with a Density Functional Theory (DFT) code. We show some results on elongated carbon chains.
This paper introduces the concept of equivalent electrical multiport for a quantum device made of a pair of two-level objects, coupled via entanglement. The coupled pair is described in terms of an equivalent 2×2 admittance matrix, derived from the theory of the generalized susceptibility. This result provides a valuable tool to analyze quantum circuits in the frame of the classical circuit theory...
The calculation of Fock-Exchange integral is becoming an important computational challenge in solving the quantum properties of systems with many electrons. In this work we show how techniques that are used in electromagnetic simulations for the similar Poisson equation can help in accelerating the calculation of such exchange integrals. The approach we present can be especially efficient for quasi-planar...
Electromagnetic (EM) absorption properties of a novel nanocarbon material - onion-like carbon (OLC) produced by annealing of detonation nanodiamonds (ND) in vacuum - have been studied in low-frequency, microwave and THz frequency ranges. It was proved experimentally that OLC EM absorption capacity can be optimized by varying the nanocarbon cluster size and ND annealing temperature so that effective...
A novel lightweight onion-like carbon (OLC) based Poly(methyl metacrylate) (PMMA) composite with high electromagnetic (EM) absorption capability determined earlier in microwave range is studied in low frequencies from 20Hz to 1MHz by dielectric spectroscopy. The investigation of dielectric properties of PMMA films with incorporated OLC in small concentration (0.5–2wt.%) have been carried out by varying...
Techniques for electrodynamic-level calculation of slot-grating wideband coupling elements for single- mode waveguides are developed. New coupling devices that ensure the obtaining of a voltage standing-wave ratio of 1.6 in the entire tuning range of resonator without readjustment of the coupling devices in resonators do not deteriorate the loaded Q factor of the resonator. A numerical technique for...
A numerical technique for electromagnetic modeling of the element for coupling of high-quality resonators with single mode waveguides is considered. For broadband matching a smooth waveguide transition ending with a narrow slit has been suggested. It was shown that such a coupling element allows open resonators as well as corrugated ones to be realized that is readjustable in a wide range f=37-280...
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