Two-Particle Dark State in the Transport through a Triple Quantum Dot

Abstract

We study transport through a triple quantum dot in a triangular geometry with applied bias such that both singly- and doubly- charged states participate. We describe the formation of electronic dark states -- coherent superpositions that block current flow -- in the system, and focus on the formation of a two-electron dark state. We discuss the conditions under which such a state forms and describe the signatures that it leaves in transport properties such as the differential conductance and shotnoise.

(9 pages, 7 figures), we now consider two different sets of charging energies

References in corpus (8)

• Franck-Condon blockade in suspended carbon nanotube quantum dots
• An electrostatically defined serial triple quantum dot charged with few electrons
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• All-electronic coherent population trapping in quantum dots
• Two path transport measurements on a triple quantum dot
• Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers
• Non-invasive detection of molecular bonds in quantum dots
• Charge-localization and isospin-blockade in vertical double quantum dots