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Appl. Sci. 2017, 7(7), 721; doi:10.3390/app7070721

The New Concept of Nano-Device Spectroscopy Based on Rabi–Bloch Oscillations for THz-Frequency Range

Department from Physical Electronics, School of Electrical Engineering, Tel Aviv University, Tel Aviv 39040, Israel
Author to whom correspondence should be addressed.
Academic Editor: Zaiquan Xu
Received: 21 June 2017 / Revised: 9 July 2017 / Accepted: 10 July 2017 / Published: 14 July 2017
(This article belongs to the Special Issue Nanophotonics)


We considered one-dimensional quantum chains of two-level Fermi particles coupled via the tunneling driven both by ac and dc fields in the regimes of strong and ultrastrong coupling. The frequency of ac field is matched with the frequency of the quantum transition. Based on the fundamental principles of electrodynamics and quantum theory, we developed a general model of quantum dynamics for such interactions. We showed that the joint action of ac and dc fields leads to the strong mutual influence of Rabi- and Bloch oscillations, one to another. We focused on the regime of ultrastrong coupling, for which Bloch- and Rabi-frequencies are significant values of the frequency of interband transition. The Hamiltonian was solved numerically, with account of anti-resonant terms. It manifests by the appearance of a great number of narrow high-amplitude resonant lines in the spectra of tunneling current and dipole moment. We proposed the new concept of terahertz (THz) spectroscopy, which is promising for different applications in future nanoelectronics and nano-photonics. View Full-Text
Keywords: Rabi-oscillations; Bloch-oscillations; ultrastrong coupling; THz-spectroscopy Rabi-oscillations; Bloch-oscillations; ultrastrong coupling; THz-spectroscopy

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Levie, I.; Slepyan, G. The New Concept of Nano-Device Spectroscopy Based on Rabi–Bloch Oscillations for THz-Frequency Range. Appl. Sci. 2017, 7, 721.

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