Fine energy splitting of overlapping Andreev bound states in multiterminal superconducting nanostructures
Viktoriia Kornich (TU Delft - QN/Nazarov Group, Kavli institute of nanoscience Delft)
Hristo S. Barakov (Kavli institute of nanoscience Delft, TU Delft - QN/Nazarov Group)
Yuli V. Nazarov (TU Delft - QN/Nazarov Group, Kavli institute of nanoscience Delft)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
The recent proposals of experiments with single Andreev bound states make relevant a detailed analysis of these states in multiterminal superconducting nanostructures. We evaluate the energy splitting of degenerate Andreev bound states that overlap in a superconducting lead, and find that the splitting is reduced in comparison with their energy by a small factor RGQ, with RGQ being the dimensionless resistance of the overlap region in the normal state. This permits quantum manipulation of the quasiparticles in these states. We provide a simple scheme of such manipulation.