Remote Dipolar Interactions for Objective Density Calibration and Flow Control of Excitonic Fluids

TL;DR

This paper introduces a method leveraging remote dipolar interactions to achieve objective density calibration and flow control of excitonic fluids in quantum devices, addressing key measurement challenges.

Contribution

It presents a novel approach to observe and utilize remote dipolar interactions for objective density measurement and flow control in excitonic fluids.

Findings

Remote interactions enable objective density calibration.

Flow control of excitonic fluids is achieved via dipolar interactions.

The method is validated using a 2D hydrodynamical model.

Abstract

In this paper we suggest a method to observe remote interactions of spatially separated dipolar quantum fluids, and in particular of dipolar excitons in GaAs bilayer based devices. The method utilizes the static electric dipole moment of trapped dipolar fluids to induce a local potential change on spatially separated test dipoles. We show that such an interaction can be used for a model- independent, objective fluid density measurements, an outstanding problem in this field of research, as well as for inter-fluid exciton flow control and trapping. For a demonstration of the effects on realistic devices, we use a full two-dimensional hydrodynamical model.