Nonlocal signatures of hybridization between quantum dot and Andreev bound states

TL;DR

This paper explores how quantum dots hybridize with Andreev bound states in nanowires, revealing both local and nonlocal spectroscopic signatures that demonstrate the extended nature of these states.

Contribution

It presents experimental evidence of local and nonlocal signatures of hybridization between quantum dots and Andreev bound states in nanowires.

Findings

Hybridization causes characteristic spectroscopic patterns.

Nonlocal signatures indicate the extended nature of ABS.

Experimental validation of quantum dot-ABS interactions.

Abstract

We investigate local and nonlocal signatures of hybridization between a quantum dot state and an extended Andreev bound state (ABS) in a gate-defined InAs nanowire with multiple side probes. When a quantum dot in one of the side probes was hybridized with an ABS in the nanowire, a characteristic spectroscopic pattern was observed both locally, i.e., in the probe with the quantum dot, and nonlocally, in the tunnel conductance of a remote probe. Nonlocal signatures of hybridization reveal the extended nature of the ABS.