Detection of the relaxation rates of an interacting quantum dot by a capacitively coupled sensor dot

Autor:	Schulenborg, Jens, Splettstoesser, Janine, Governale, Michele, Contreras-Pulido, L. Debora
Rok vydání:	2014
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B, 89, 195305, 2014
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.89.195305
Popis:	We present a theoretical study of the detection of the decay time scales for a single-level quantum dot by means of a capacitively coupled sensor dot, which acts as an electrometer. We investigate the measurement back-action on the quantum-dot decay rates and elucidate its mechanism. We explicitly show that the setup can be used to measure the bare quantum-dot relaxation rates by choosing gate pulses that minimize the back-action. Interestingly, we find that besides the charge relaxation rate, also the rate associated to the fermion parity in the dot can be accessed with this setup. Comment: 15 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.1141 Zobrazit plný text záznamu View this record from Arxiv