Excitation of terahertz nanoantennas by Rabi waves

Abstract

A new electromagnetic NDI-technique based on the measurement of source-sample reaction forces AIP Conf.Abstract. Theoretical model of quantum dot ring, strongly coupled with classical electromagnetic field, is developed. We demonstrate, that tunnel current in the QD-ring has low-frequency component, excited by Rabi waves, propagating into the ring, and the ring can be considered as a candidate for role of terahertz magnetic loop antenna. The low-frequency current is inspired by the asymmetry of electron tunneling.

QED model of resonance phenomena in quasionedimensional multichain qubit systems

“…Here we will consider the only SSH-σ-polarons to be optically active centers, which produce polaron lattice. Each σ-polaron in accordance with experiment [22] can be approximated like to guantum dot in [3] by twolevel qubit. Then the Hamiltonian, proposed in given work can be generalized.…”

“…The relationship (35) by taking into account ( 25) -(34) determines Rabi-wave packet, which propagates along individual chain of zigzag NT. It is also clear, that subsequent analysis of Rabi-wave packet dynamics for individual NT-component will be the same (by rescaling of parameters), that in [3]. The parameters can in principle be obtained by detailed comparison of results obtained with experiments on optical absorption reflection or Raman scattering.…”

“…Hamiltonian in the form like to (12) at n = 1 is usually used for description of tunneling between the states with equal energies, in particular, for tunneling between quantum dot states [3]. Hamiltonian (12) at any n describes actually the connection between pairs of the states, which satisfy the following condition -the first state in any pair results from the second state (and vice versa) by time reversal.…”

“…]. We will take into consideration the relaxation processes by means of standard phenomenological way like to [3], that is by substituting instead real value ω 0 the complex values ω 0 − iλ and ω 0 + iλ in the equations ( 18) and ( 19) correspondingly. It is suggested, that relaxation time τ is independent on the chain number and it is determined by the value, which is reciprocal to λ, that is τ = 2π λ .…”

“…Quantum electrodynamics (QED) consideration of interaction of electromagnetic (EM) field with matter is used at present very rare in practical applications, for instance, quantum nature of EM-field is not taken into account by its interaction with nanoobjects like to carbon nanotubes, both in theoretical and experimental aspects [1], [2]. There exist at present in QED-theory the analytical solutions of the task of the interaction of quantized single mode EM-field with one qubit (two level system), Jaynes-Cummings model (JCM), with multiqubit systems without interaction between qubits, Tavis-Cummings model, and the model described in [3], generalizing Tavis-Cummings model by taking into account the 1D-coupling between qubits. The model to be considered continues given series, that is, it is the model of the interaction of quantized EM-field with quasionedimensional axially symmetric multichain qubit system by taking into account both the intrachain and interchain qubit coupling.…”