Electron dynamics in a 2D nanobubble: A two-level system based on spatial density

TL;DR

This paper explores the complex electron dynamics within 2D nanobubbles on TMDC monolayers, demonstrating controllable two-level system behavior that could enable new quantum circuit designs.

Contribution

It introduces a model of electron behavior in 2D nanobubbles as a controllable two-level quantum system based on spatial density dynamics.

Findings

Electron density exhibits non-trivial spatiotemporal dynamics.

States can be fully controlled and switched using multiple wave packets.

Potential for novel quantum circuit implementations.

Abstract

Nanobubbles formed in monolayers of transition metal dichalcogenides (TMDCs) on top of a substrate feature localized potentials, in which electrons can be captured. We show that the captured electronic density can exhibit a non-trivial spatiotemporal dynamics, whose movements can be mapped to states in a two-level system illustrated as points of an electronic Poincar\'e sphere. These states can be fully controlled, i.e, initialized and switched, by multiple electronic wave packets. Our results could be the foundation for novel implementations of quantum circuits.