Strong electron-photon coupling in one-dimensional quantum dot chain: Rabi waves and Rabi wavepackets

TL;DR

This paper predicts and analyzes the spatial propagation of Rabi oscillations in a one-dimensional quantum dot chain, revealing new quantum states and potential applications in quantum computing and information.

Contribution

It introduces the concept of Rabi waves in a quantum dot chain and explores their properties, dispersion, and potential for quantum information processing.

Findings

Rabi waves can propagate as traveling waves and wave packets in the QD chain.

Propagation of Rabi wave packets transfers quantum correlations and alters light statistics.

Conditions for experimental observation of Rabi waves are identified.

Abstract

We predict and theoretically investigate the new coherent effect of nonlinear quantum optics -- spatial propagation of Rabi oscillations (Rabi waves) in one-dimensional quantum dot (QD) chain. QD-chain is modeled by the set of two-level quantum systems with tunnel coupling between neighboring QDs. The space propagation of Rabi waves in the form of traveling waves and wave packets is considered. It is shown, that traveling Rabi waves are quantum states of QD-chain dressed by radiation. The dispersion characteristics of traveling Rabi waves are investigated and their dependence on average number of photons in wave is demonstrated. The propagation of Rabi wave packets is accompanied by the transfer of the inversion and quantum correlations along the QD-chain and by the transformation of quantum light statistics. The conditions of experimental observability are analyzed. The effect can find practical use in quantum computing and quantum informatics.