Tunable few electron quantum dots in InAs nanowires

Abstract

Quantum dots realized in InAs are versatile systems to study the effect of spin-orbit interaction on the spin coherence, as well as the possibility to manipulate single spins using an electric field. We present transport measurements on quantum dots realized in InAs nanowires. Lithographically defined top-gates are used to locally deplete the nanowire and to form tunneling barriers. By using three gates, we can form either single quantum dots, or two quantum dots in series along the nanowire. Measurements of the stability diagrams for both cases show that this method is suitable for producing high quality quantum dots in InAs.

8 pages, 4 figures

References in corpus (1)

• Single-electron tunneling in InP nanowires

Cited by in corpus (5)

• Spin dynamics in InAs-nanowire quantum-dots coupled to a transmission line
• Spin interactions, relaxation and decoherence in quantum dots
• Nuclear spin dynamics and Zeno effect in quantum dots and defect centers
• Failure of standard approximations of the exchange coupling in nanostructures
• Spin relaxation in an InAs quantum dot in the presence of terahertz driving fields