Temat: 72.70.+m - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Waiting Time Correlations in Transport through Two Coupled Quantum Dots
Autorzy:: Ptaszyński, K.
Powiązania:: https://bibliotekanauki.pl/articles/1191206.pdf
Data publikacji:: 2016-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.70.+m
73.23.Hk
73.63.Kv
Opis:: Waiting times between subsequent tunneling events in the double quantum dot system are shown to be correlated. The magnitude and the sign of the cross-correlation depend on the degree and the character of modulation of tunneling rates in the one dot due to the interaction with the charge state of the other, as well as on the relation between different time scales of the system dynamics.
Źródło:: Acta Physica Polonica A; 2016, 130, 5; 1233-1235
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Noise Enhancement due to Telegraphic Switching in a Two-Level Quantum Dot Coupled to Spin-Polarized Leads
Autorzy:: Ptaszyński, K.
Powiązania:: https://bibliotekanauki.pl/articles/1030411.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.70.+m
73.23.Hk
73.63.Kv
Opis:: Current fluctuations in a two-level quantum dot coupled to the spin-polarized leads are studied by means of the Markovian master equation. It is shown, that transitions between spin configurations of the system cause switching between different current channels, which generates the super-Poissonian noise enhancement and the correlation between subsequent waiting times separating the successive tunneling events.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 526-528
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Statistics of Tunneling Events in Three-Terminal Hybrid Devices with Quantum Dot
Autorzy:: Michałek, G.
Bułka, B.
Domański, T.
Wysokiński, K.
Powiązania:: https://bibliotekanauki.pl/articles/1030466.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.45.+c
73.23.Hk
72.70.+m
73.63.Kv
Opis:: We investigate statistics of the tunneling events in the short time limit in terms of the waiting time distribution (WTD), defined as the probability for a delay time between two subsequent transitions of particles, and consider it for a quantum dot (QD) strongly coupled to a superconducting and weakly coupled to two normal electrodes. Our study focuses on the WTD in the subgap transport, when coherent exchange of the Cooper pairs occurs between the QD and the superconductor. The dynamics can be described in terms of a Markovian generalized master equation for the reduced density matrix. We observe coherent oscillations between the Andreev bound states in the correlated jumps, both for the local and non-local WTDs. In addition the analysis of the transient currents give us some insight into dominant relaxation processes in short time scales.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 391-393
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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