Strong electron-photon coupling in a one-dimensional quantum dot chain: Rabi waves and Rabi wave packets

Abstract

We predict and theoretically investigate the new coherent effect of nonlinear quantum opticsspatial 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.

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

“…The reachable values of the ac field 10 7 ÷ 10 8 V/m for the frequencies ω ≈ ω 0 ∼ = 2.6 eV noted in [70] correspond to the strong coupling regime. The agreed values are implementable for the chain of 1D semiconductor quantum dots [14], which makes it another candidate for RBO experiments in the strong coupling regime. The suitable structure for RBO ultrastrong coupling was implemented via plasmon polaritons in parabolic semiconductor quantum wells [71].…”

“…implementable for the chain of 1D semiconductor quantum dots [14], which makes it another candidate for RBO experiments in the strong coupling regime. The suitable structure for RBO ultrastrong coupling was implemented via plasmon polaritons in parabolic semiconductor quantum wells [71].…”

Soliton nanoantennas in two-dimensional arrays of quantum dots

“…We take QDs as identical two-level dissipationless systems with the transition energy, ω 0 , corresponding to the transition between excited and ground-state electron orbitals, |a p,q and |b p,q . The transition dipolar moment is µ = e z µ, and only intraband transitions are taken into account [23]. Each QD is coupled by the electron tunnelling to four nearest neighbors in the 2D array.…”

“…In Ref. [23], the tunnelling was assumed to be a dominant mechanism of the inter-dot coupling. In that case, a significant role is played by local-field effects in the QDs, even in the weak-coupling regime [17,18].…”

Collective spontaneous emission in coupled quantum dots: Physical mechanism of quantum nanoantenna

“…If the separation between the emitters, exemplified, e.g., by quantum dots (QDs), is small, there is a probability that the excitation can be transferred via charge tunneling [9][10][11][12][13] or long-range radiative interaction. 14 If the interemitter distance is a little bit longer, they are coupled by a near-field quasielectrostatic dipole-dipole (d-d) interaction, mostly referred to as the Förster energy transfer.…”