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Updated: Jan 28, 2026

Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Probing and driving of spin and charge states in double quantum dot under the quench
N S Maslova1, P I Arseyev2,3, V N Mantsevich4
1Quantum Technology Center and Quantum electronics department, Faculty of Physics, Lomonosov Moscow State University, 119991, Moscow, Russia.
Abstract:
We have analyzed theoretically quenched dynamics of correlated double quantum dot (DQD) due to the switching "on" and "off" coupling to reservoirs. The possibility for controllable manipulation of charge and spin states in the double quantum dot was revealed and discussed. The proposed experimental scheme allows to prepare in DQD maximally entangled pure triplet state and to drive it to another entangled singlet state by tuning both applied bias and gate voltage. It was also demonstrated that the symmetry properties of the total system (double quantum dot coupled to electron reservoirs) allow to resolve the initially prepared two-electron states by detecting non-stationary spin-polarized currents flowing in both reservoirs and controlling the residual charge.
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