Coulomb Interaction Effects on the Terahertz Photon-Assisted Tunneling through a InAs Quantum Dot

Abstract

Recently, the terahertz (THz) photon-assisted tunneling (PAT) through a two-level InAs quantum dot (QD) has been successfully realized in experiment [Phys. Rev. Lett. {\bf 109}, 077401 (2012)]. The Coulomb interaction in this device is comparable with the energy difference between the two energy levels. We theoretically explore the effects of Coulomb interaction on the PAT processes and show that the main peaks of the experiment can be well derived by our model analysis. Furthermore, we find additional peaks, which were not addressed in the InAs QD experiment and may be further identified in experiments. In particular, we show that, to observe the interesting photon-induced excited state resonance in InAs QD, the Coulomb interaction should be larger than THz photon frequency.

arXiv comment6 pages, 4 figures

References in corpus (12)

• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Electron transport through double quantum dots
• Driven coherent oscillations of a single electron spin in a quantum dot
• Coherent manipulation of electronic states in a double quantum dot
• Demonstration of conditional gate operation using superconducting charge qubits
• Photon-assisted transport in semiconductor nanostructures
• Dipole coupling of a double quantum dot to a microwave resonator
• Time-Dependent Transport through a Mesoscopic Structure
• Quantum transport theory for nanostructures with Rashba spin-orbital interaction
• Photon-assisted electron transport through a three-terminal quantum dot system with nonresonant tunneling channels
• Microwave quantum optics and electron transport through a metallic dot strongly coupled to a transmission line cavity
• Photon- and phonon-assisted tunneling in the three-dimensional charge stability diagram of a triple quantum dot array