Nonequilibirum noise spectrum and Coulomb-blockade-assisted Rabi interference in a double-dot Aharonov-Bohm interferometer

Abstract

We investigate the charge-states coherence underlying the nonequilibirum transport through a spinless double-dot Aharonov-Bohm (AB) interferometer. Both the current noise spectrum and real-time dynamics are evaluated with the well-established dissipaton-equation-of-motion method. The resulted spectrums show the characteristic peaks and dips, arising from coherent Rabi oscillation dynamics, with the environment-assisted indirect inter-dot tunnel coupling mechanism. The observed spectroscopic features are in a quantitative agreement to the real-time dynamics of the reduced density matrix off-diagonal element between two charge states. As the aforementioned mechanism, these characteristics of coherence are very sensitive to the AB phase. While this is generally true for cross-correlation spectrum, the total circuit noise spectrum that is experimentally more accessible shows remarkably rich interplay between various mechanisms. The most important finding of this work is the existence of Coulomb-blockade-assisted Rabi interference, with very distinct signatures arising from the interplay between the AB interferometer and the interdot Coulomb interaction induced Fano resonance.

10 pages,5 figures

References in corpus (15)

• Hierarchical Liouville-space approach for accurate and universal characterization of quantum impurity systems
• Using a quantum dot as a high-frequency shot noise detector
• Noise enhancement due to quantum coherence in coupled quantum dots
• Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact
• Magnetic field dependent transmission phase of a double dot system in a quantum ring
• Asymmetric Quantum Shot Noise in Quantum Dots
• Calculation of the current noise spectrum in mesoscopic transport: an efficient quantum master equation approach
• Electron transport through Aharonov-Bohm interferometer with laterally coupled double quantum dots
• Aharonov-Bohm Oscillations Changed by Indirect Interdot Tunneling via Electrodes in Parallel-Coupled Vertical Double Quantum Dots
• The noise spectra of a biased quantum dot
• Steps and dips in the ac conductance and noise of mesoscopic structures
• Interference through quantum dots
• Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer
• Manipulating quantum coherence of charge states in interacting double-dot Aharonov-Bohm interferometers
• Magnetotransport in Aharonov Bohm interferometers: Exact numerical simulations

Cited by in corpus (8)

• Quantum mechanics of open systems: Dissipaton theories
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• Theoretical formulations on thermodynamics of quantum impurity systems
• Mechanism of current noise spectrum in a nonequilibirum Kondo dot system
• Distinguishing Majorana bound states from Andreev bound states through differential conductance and current noise spectrum
• Phase-controlled quantum transport signatures in a quantum dot-Majorana hybrid ring system