Matter coupling to strong electromagnetic fields in two-level quantum systems with broken inversion symmetry

O. V. Kibis, G. Ya Slepyan, S. A. Maksimenko, A. Hoffmann

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate theoretically the parametric oscillator behavior of a two-level quantum system with broken inversion symmetry exposed to a strong electromagnetic field. A multitude of resonance frequencies and additional harmonics in the scattered light spectrum as well as an altered Rabi frequency are predicted to be inherent to such systems. In particular, dipole radiation at the Rabi frequency appears to be possible. Since the Rabi frequency is controlled by the strength of the coupling electromagnetic field, the effect can serve for the frequency-tuned parametric amplification and generation of electromagnetic waves. Manifestation of the effect is discussed for III-nitride quantum dots with strong built-in electric field breaking the inversion symmetry. Terahertz emission from arrays of such quantum dots is shown to be experimentally observable.

Original languageEnglish
Article number023601
JournalPhysical Review Letters
Volume102
Issue number2
DOIs
StatePublished - 12 Jan 2009
Externally publishedYes

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