Crossing of two Coulomb-Blockade Resonances

Abstract

We investigate theoretically the transport of non--interacting electrons through an Aharanov--Bohm (AB) interferometer with two quantum dots (QD) embedded into its arms. In the Coulomb-blockade regime, transport through each QD proceeds via a single resonance. The resonances are coupled through the arms of the AB device but may also be coupled directly. In the framework of the Landauer--Buttiker approach, we present expressions for the scattering matrix which depend explicitly on the energies of the two resonances and on the AB phase. We pay particular attention to the crossing of the two resonances.

15 pages, 1 figure

References in corpus (5)

• Quantum Effects in Coulomb Blockade
• Observation of a Chiral State in a Microwave Cavity
• Flux-Dependent Level Attraction in Double-Dot Aharonov-Bohm Interferometers
• The Enhanced Sensitivity of the Transmission Phase of a Quantum Dot to Kondo Correlations
• Transmission Phase of an Isolated Coulomb-Blockade Resonance

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