scholarly journals Waiting time distribution revealing the internal spin dynamics in a double quantum dot

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Krzysztof Ptaszyński
Keyword(s):  
Quantum Dot ◽  
Waiting Time ◽  
Time Distribution ◽  
Spin Dynamics ◽  
Double Quantum ◽  
Waiting Time Distribution ◽  
Double Quantum Dot

scholarly journals Steady-State Entanglement in the Nuclear Spin Dynamics of a Double Quantum Dot

2013 ◽  
Vol 111 (24) ◽  
Author(s):  
M. J. A. Schuetz ◽  
E. M. Kessler ◽  
L. M. K. Vandersypen ◽  
J. I. Cirac ◽  
G. Giedke
Keyword(s):  
Steady State ◽  
Quantum Dot ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Double Quantum ◽  
Double Quantum Dot

scholarly journals Phonon-assisted relaxation between triplet and singlet states in a self-assembled double quantum dot

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Krzysztof Gawarecki ◽  
Paweł Machnikowski
Keyword(s):  
Quantum Dot ◽  
Spin Dynamics ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Model Combining ◽  
Singlet States ◽  
Spin Singlet ◽  
Electric And Magnetic Fields ◽  
Self Assembled ◽  
Interaction Approach

AbstractWe study theoretically phonon-induced spin dynamics of two electrons confined in a self-assembled double quantum dot. We calculate the transition rates and time evolution of occupations for the spin-triplet and spin-singlet states. We characterize the relative importance of various relaxation channels, including two-phonon processes, as a function of the electric and magnetic fields. The simulations are based on a model combining the eight-band $$\varvec{k}\!\cdot \!\varvec{p}$$ k · p method and configuration-interaction approach. We show that the electron g-factor mismatch between the Zeeman doublets localized on different dots opens a relatively fast triplet-singlet phonon-assisted relaxation channel. We also demonstrate, that the relaxation near the triplet-singlet anticrossing is slowed down up to several orders of magnitude due to vanishing of some relaxation channels.

scholarly journals Large Voltage-Tunable Spin Valve Based on a Double Quantum Dot

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Patrycja Tulewicz ◽  
Kacper Wrześniewski ◽  
Szabolcs Csonka ◽  
Ireneusz Weymann
Keyword(s):  
Quantum Dot ◽  
Spin Valve ◽  
Double Quantum ◽  
Double Quantum Dot
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