Interferometry using spatial adiabatic passage in quantum dot networks

TL;DR

This paper demonstrates how spatial adiabatic passage techniques can create a quantum dot electron interferometer, revealing tunable interference effects similar to the Aharonov-Bohm phenomenon, with controllable adiabatic and non-adiabatic dynamics.

Contribution

It introduces a novel electron interferometer design using spatial adiabatic passage in quantum dot networks, highlighting tunable interference effects and dynamic regimes.

Findings

Interference effects analogous to Aharonov-Bohm observed.

Transition between adiabatic and non-adiabatic regimes controllable.

Device demonstrates tunable quantum interference phenomena.

Abstract

We show that techniques of spatial adiabatic passage can be used to realise an electron interferometer in a geometry analogous to a conventional Aharonov-Bohm ring, with transport of the particle through the device modulated using coherent transport adiabatic passage. This device shows an interesting interplay between the adiabatic and non-adiabatic behaviour of the system. The transition between non-adiabatic and adiabatic behaviour may be tuned via system parameters and the total time over which the protocol is enacted. Interference effects in the final state populations analogous to the electrostatic Aharonov-Bohm effect are observed.