Interference through quantum dots

Abstract

We discuss the effect of quantum interference on transport through a quantum dot system. We introduce an indirect coherent coupling parameter alpha, which provides constructive/destructive interference in the transport current depending on its phase and the magnetic flux. We estimate the current through the quantum dot system using the non-equilibrium Green's function method as well as the master equation method in the sequential tunneling regime. The visibility of the Aharonov-Bohm oscillation is evaluated. For a large inter-dot Coulomb interaction, the current is strongly suppressed by the quantum interference effect, while the current is restored by applying an oscillating resonance field with the frequency of twice the inter-dot tunneling energy.

10 pages, 3 figures

References in corpus (24)

• Quantum Computation with Quantum Dots
• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Tuning of the Fano Effect through a Quantum Dot in an Aharonov-Bohm Interferometer
• Microscopic derivation of rate equations for quantum transport
• Coherent coupling of two quantum dots embedded in an Aharonov-Bohm ring
• Time-dependent resonant tunneling via two discrete states
• Probing Entanglement and Non-locality of Electrons in a Double-Dot via Transport and Noise
• Phase Evolution in a Kondo Correlated System
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• Flux-Dependent Level Attraction in Double-Dot Aharonov-Bohm Interferometers
• Rate equations for quantum transport in multi-dot systems
• Aharonov-Bohm Interferometry with Interacting Quantum Dots: Spin Configurations, Asymmetric Interference Patterns, Bias-Voltage-Induced Aharonov-Bohm Oscillations, and Symmetries of Transport Coefficients
• Aharonov-Bohm oscillations and resonant tunneling in strongly correlated quantum dots
• All-electronic coherent population trapping in quantum dots
• Coherent and incoherent pumping of electrons in double quantum dots
• Orbital and spin Kondo effects in a double quantum dot
• Interference and interaction effects in multi-level quantum dots
• Time-dependent resonant tunneling for a parallel-coupled double quantum dots
• Electron transport through Aharonov-Bohm interferometer with laterally coupled double quantum dots
• Coherent effects in magneto-transport through Zeeman split levels
• Fano Effect through Parallel-coupled Double Coulomb Islands
• Effect of inhomogeneous magnetic flux on double-dot Aharonov-Bohm Interferometer
• Non-collinear magnetoconductance of a quantum dot
• Quantum interference in resonant tunneling and single spin measurements

Cited by in corpus (15)

• Interference effects in the counting statistics of electron transfers through a double quantum dot
• Geometrical effects and signal delay in time-dependent transport at the nanoscale
• Waiting time distributions of electron transfers through quantum dot Aharonov-Bohm interferometers
• Dynamics of coherences in the interacting double-dot Aharonov-Bohm interferometer: Exact numerical simulations
• Flux-dependent occupations and occupation difference in geometrically symmetric and energy degenerate double-dot Aharonov-Bohm interferometers
• Quantum interference in transport through almost symmetric double quantum dots
• Theory of electronic transport through a triple quantum dot in the presence of magnetic field
• Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field
• Nonequilibirum noise spectrum and Coulomb-blockade-assisted Rabi interference in a double-dot Aharonov-Bohm interferometer
• A review on Aharonov-Bohm quantum machines: Thermoelectric heat engines and diodes
• Phase and amplitude of Aharonov-Bohm oscillations in nonlinear three-terminal transport through a double quantum dot
• Manipulating quantum coherence of charge states in interacting double-dot Aharonov-Bohm interferometers
• Dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor
• Thermopower signatures and spectroscopy of the canyon of conductance suppression
• Photon-Assisted Tunneling in Double Quantum Dot: Application of Scattering Theory