Controlling inelastic cotunneling through an interacting quantum dot by a circularly-polarized field

Abstract

We study inelastic cotunneling through a strong Coulomb-blockaded quantum dot subject to a static magnetic field and a perpendicular circularly-polarized magnetic field using a quantum Langevin equation approach. Our calculation predicts an interesting controllable cotunneling current characteristic, splitting--zero-anomaly--splitting transition of the differential conductance with increasing the driving frequency, ascribing to the role of {\em photon-assisted spin-flip} cotunneling processes.

5 pages, 3 figures, published version in Phys. Rev. B

References in corpus (4)

• Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
• Optical Read-Out and Initialization of an Electron Spin in a Single Quantum Dot
• Optical Detection of Single-Electron Spin Decoherence in a Quantum Dot
• Spin-flip Effects in the Mesoscopic Spin-Interferometer