Fedichkin L. E.1, Berdashkevich A. E.1, Sayapin Z. I.1, Tarpanov D. A.1, Shaposhnikov D. Yu.1
1Moscow Institute of Physics and Technology, Dolgoprudny, Moscow oblast, Russia
Email: leonid@phystech.edu
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.
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