Pis’ma v ZhETF, vol. 105, iss. 2, pp. 106 – 107 2017 January 25 c Diagnostics of many-particle electronic states: non-stationary currents and residual charge dynamics N. S.Maslova+, V.N.Mantsevich+1), P. I.Arseyev∗Ч +Moscow State University, Department of Physics, 119991 Moscow, Russia ∗P.N.Lebedev Physical Institute of RAS, 119991 Moscow, Russia ЧRussia National Research University Higher School of Economics, 101000 Moscow, Russia Submitted 5 October 2016 Resubmitted 9 December 2016 DOI: 10.7868/S0370274X17020102 The control and diagnostics of electronic states in semiconductor nanostructures attracts a great deal of attention now a days. <...> One of the key problems in this area is a development of efficientmethods of detection of electronic states with different spin orientation as spin degrees of freedom are considered to play an important role in realizing new functions in modern nanoelectronic devices such as spin pumps [1–3] and turnstiles [4, 5], spin interference devices [6], quantum dot spin cellular automata [7–9], and devices for the qubit information [10, 11]. <...> Double QDs are recently an attractive objects for spin-dependent transport analysis [12, 13]. <...> Electronic transport through the coupled QDs was considered both in the case of coupling to spin-polarized magnetic and non-magnetic [13] leads. <...> Coupled QDs can be applied for modern nanoelectronic devices creation due to the particular properties of charge and spin kinetics of individual localized states [14, 15]. <...> The possibility of QDs integration in a small size quantum circuits deals with careful analysis of relaxation processes and nonstationary effects influence on the electron transport through the dots system [16]. <...> Electronic transport in such systems is strongly governed by the presence of Coulomb correlations and by the ratio between the QDs coupling and interaction with the reservoir [17]. <...> As it was shown in [18, 19] spatial symmetry of investigated system strongly affects the current properties both in stationary and non-stationary cases. <...> Moreover, non-stationary characteristics provide more information about the properties of nanoscale systems comparing to the stationary ones. <...> Current noise characteristics in a metallic diffusive conductor have been <...>