Work

Hole-capture competition between a single quantum dot and an ionized acceptor

Year: 2018

Type: article

Abstract: We study the competition of hole capture between an In(Ga)As quantum dot and a directly adjacent ionized impurity in view of spin-photon interfaces. The Kerr rotation noise spectroscopy at 4.2 K shows that the hole-capture probability of the In(Ga)As quantum dot is about one order of magnitude higher compared to the hole-capture probability of the ionized impurity and suggests that a simultaneous occupation of quantum dot and impurity by a hole is efficiently suppressed due to Coulomb interaction. A theoretical model of interconnected spin and charge noise allows the quantitative specification of all relevant time scales.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.98.125426

Authors: J. Wiegand, D. S. Smirnov, J. Osberghaus, L. Abaspour, J. Hübner, M. Oestreich

Institutions: Leibniz University Hannover, Ioffe Institute

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Russian Science Foundation

Awards: G4131527838, G4324135459, G470776415, G692980774