XXIX Symposium "Nanophysics and Nanoelectronics" in Nizhny Novgorod, March 10-14, 2025
Physics of nanostructures

Relaxation of double quantum dot qutrit

L. Fedichkin, A. E. Berdashkevich, Z. I. Sayapin, D. A. Tarpanov, D. Yu. Shaposhnikov

Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region

Abstract: Relaxation of qutrit in two tunnel-coupled quantum dots is considered. Infrared radiative transitions between three energy levels of spatial quantization used for storage and processing of quantum information are investigated as possible relaxation channels. It is proven that by using earlier proposed metric of quantum processes – maximal deviation metric – in the case of qutrit the contribution of relaxation in the decrease of probability of sought outcome of quantum computations is represented by compact analytic expression.

Keywords: qutrit, relaxation, metric of quantum processes, decoherence, maximal deviation metric, double quantum dot, semiconductor charge qutrit.

Received: 29.04.2025
Revised: 29.04.2025
Accepted: 29.04.2025

DOI: 10.61011/JTF.2025.09.61238.88-25

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