scholarly journals Nonequilibrium Shot Noise Spectrum Through a Quantum Dot in the Kondo Regime: A Master Equation Approach under Self-Consistent Born Approximation

2013 ◽  
Vol 60 (4) ◽  
pp. 503-509 ◽  
Author(s):  
Yu Liu ◽  
Jin-Shuang Jin ◽  
Jun Li ◽  
Xin-Qi Li ◽  
Yi-Jing Yan
Keyword(s):  
Quantum Dot ◽  
Master Equation ◽  
Shot Noise ◽  
Born Approximation ◽  
Noise Spectrum ◽  
Equation Approach ◽  
Self Consistent ◽  
Master Equation Approach

Decoherence Effects in Arrays of Coupled Quantum Dots

2000 ◽  
Vol 642 ◽  
Author(s):  
E. Cota ◽  
F. Rojas ◽  
S. E. Ulloa
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Master Equation ◽  
Dynamical Response ◽  
Equation Approach ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Dissipative Effects ◽  
Master Equation Approach ◽  
Account Electron

ABSTRACTWe study the dynamics of the charge distribution (polarization) in an array of four quantum dots located at the corners of a square. The array has two extra electrons in a neutralizing background. We take into account electron-phonon interaction effects using a quantum Markovian master equation approach. Results show that dissipative effects are determinant in the dynamical response of a quantum-dot cell close to a nearby driver cell with prescribed polarization varying with time. The response is shown to depend strongly on temperature.

scholarly journals Suppression of shot noise in a spin–orbit coupled quantum dot

2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Zhimei Wang ◽  
Lijun Mao ◽  
Naitao Xue ◽  
Wenting Lu
Keyword(s):  
Quantum Dot ◽  
Shot Noise ◽  
Orbit Coupling ◽  
Quantum Master Equation ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Equation Approach ◽  
Full Counting Statistics ◽  
Master Equation Approach ◽  
Counting Statistics

We study theoretically the transport properties of electrons in a quantum dot system with spin–orbit coupling. By using the quantum master equation approach, the shot noise and skewness of the transport electrons are calculated. We obtain super-Poisson noise behaviour by investigating the full counting statistics of the transport system. We discover super-Poisson behaviour is more obvious with the spin polarization increasing. More importantly, we discover the suppression of shot noise induced by spin–orbit coupling. The value of shot noise is gradually decreasing when spin–orbit coupling strength increases.

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