scholarly journals Control of the two-electron exchange interaction in a nanowire double quantum dot

2018 ◽  
Vol 98 (24) ◽  
Author(s):  
Zhi-Hai Liu ◽  
O. Entin-Wohlman ◽  
A. Aharony ◽  
J. Q. You
Keyword(s):  
Quantum Dot ◽  
Exchange Interaction ◽  
Electron Exchange ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Electron Exchange Interaction

scholarly journals Effect of Exchange Interaction on Spin Dephasing in a Double Quantum Dot

2006 ◽  
Vol 97 (5) ◽  
Author(s):  
E. A. Laird ◽  
J. R. Petta ◽  
A. C. Johnson ◽  
C. M. Marcus ◽  
A. Yacoby ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Exchange Interaction ◽  
Double Quantum ◽  
Spin Dephasing ◽  
Double Quantum Dot

scholarly journals Dynamical second-order noise sweetspots in resonantly driven spin qubits

Quantum ◽  
2021 ◽  
Vol 5 ◽  
pp. 607
Author(s):  
Jordi Picó-Cortés ◽  
Gloria Platero
Keyword(s):  
Quantum Dot ◽  
Exchange Interaction ◽  
Second Order ◽  
Quantum Gates ◽  
Double Quantum ◽  
Dephasing Time ◽  
Double Quantum Dot ◽  
Spin Triplet ◽  
Charge Noise ◽  
Qubit States

Quantum dot-based quantum computation employs extensively the exchange interaction between nearby electronic spins in order to manipulate and couple different qubits. The exchange interaction, however, couples the qubit states to charge noise, which reduces the fidelity of the quantum gates that employ it. The effect of charge noise can be mitigated by working at noise sweetspots in which the sensitivity to charge variations is reduced. In this work we study the response to charge noise of a double quantum dot based qubit in the presence of ac gates, with arbitrary driving amplitudes, applied either to the dot levels or to the tunneling barrier. Tuning with an ac driving allows to manipulate the sign and strength of the exchange interaction as well as its coupling to environmental electric noise. Moreover, we show the possibility of inducing a second-order sweetspot in the resonant spin-triplet qubit in which the dephasing time is significantly increased.

Two-electron exchange interaction in the quasimolecular systems with long-range dipole potential

2015 ◽  
Vol 38 (0) ◽  
pp. 45-55
Author(s):  
О. Мирославович Карбованець ◽  
Мирослав Іванович Карбованець ◽  
Володимир Юрійович Лазур ◽  
М. В. Хома
Keyword(s):  
Exchange Interaction ◽  
Long Range ◽  
Electron Exchange ◽  
Dipole Potential ◽  
Electron Exchange Interaction

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

Fano Effect in T-Shaped Double Quantum Dot Structure with Decoherence Effect

2008 ◽  
Vol 49 (3) ◽  
pp. 771-776 ◽  
Author(s):  
Gao Wen-Zhu ◽  
Gong Wei-Jiang ◽  
Zheng Yi-Song ◽  
Liu Yu ◽  
Lü Tian-Quan
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Fano Effect ◽  
Double Quantum Dot ◽  
Decoherence Effect

Electron transport in T-shaped double quantum dot structure

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Mohammed A. A. Abbas ◽  
Lafy F. Al-Badry ◽  
Amin H. Al-Khursan
Keyword(s):  
Electron Transport ◽  
Quantum Dot ◽  
Double Quantum ◽  
Double Quantum Dot
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