Experiment confirms, for the first time, the theoretically predicted Recurrence of Rabi Oscillations in Semiconductor Quantum Dots –
Researchers from the QR.N consortium at the Paderborn site have successfully demonstrated the experimental observation of the so-called recurrence of Rabi oscillations in Semiconductor Quantum Dots. The phenomenon was already predicted in theoretical models in 2007 but had not yet been experimentally confirmed. Rabi oscillations describe the periodic excitation of a Quantum System by light. In Semiconductor Quantum Dots, however, these oscillations are increasingly damped due to interactions with lattice vibrations in the solid-state environment. Under sufficiently strong optical excitation, these oscillations can re-emerge – an effect referred to as the revival of Rabi oscillations. The results were published at the end of December 2025 in Physical Review Letters.
The results represent an important step towards scalable Quantum Applications. They show that quantum optical processes in Semiconductor Quantum Dots can be controlled with a level of precision previously associated primarily with natural atoms. The success was based on specially developed GaAs Quantum Dot Samples, fabricated in collaboration with Johannes Kepler Universität Linz. The experimental data were jointly analyzed with theoretical groups at the Universität Paderborn and TU Dortmund and confirmed through theoretical modelling.
According to the researchers, the recurrence of Rabi oscillations is a clear indication of the high coherence and controllability of Semiconductor Quantum Dots. The precise control of such quantum mechanical processes is considered a key prerequisite for future Quantum Computers, Quantum Communication Systems, and photonic devices. Click here for the paper.
