Dark states in the magnetotransport through triple quantum dots

Abstract

We consider the transport through a system of three coupled quantum dots in a perpendicular magnetic field. At zero field, destructive interference can trap an electron in a dark state -- a coherent superposition of dot states that completely blocks current flow. The magnetic field can disrupt this interference giving rise to oscillations in the current and its higher-order statistics as the field is increased. These oscillations have a period of either the flux-quantum or half the flux-quantum, depending on the dot geometry. We give results for the stationary current and for the shotnoise and skewness at zero and finite frequency.

7 pages, 7 figures

References in corpus (3)

• An electrostatically defined serial triple quantum dot charged with few electrons
• All-electronic coherent population trapping in quantum dots
• Counting statistics of coherent population trapping in quantum dots

Cited by in corpus (7)

• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
• Two path transport measurements on a triple quantum dot
• Two-Particle Dark State in the Transport through a Triple Quantum Dot
• A triple quantum dot in a single wall carbon nanotube
• Spatial adiabatic passage in a realistic triple well structure
• Coherent spin rotations in open driven double quantum dots
• Coherent population trapping in a dressed two-level atom via a bichromatic field