Effect of induced transition on the quantum entanglement and coherence in two-coupled double quantum dots system

TL;DR

This paper investigates how external stimuli induce electronic transitions in coupled double quantum dots, affecting their quantum entanglement and coherence, with potential implications for quantum computing and nanotechnology.

Contribution

It demonstrates that external stimuli can induce quantum level crossing in coupled quantum dots, allowing tuning of entanglement and coherence properties.

Findings

External stimulus induces quantum level crossing.

Quantum properties can be enhanced by tuning transition frequency.

Coulomb potential influences entanglement and coherence.

Abstract

Studying quantum properties in solid-state systems is a significant avenue for research. In this scenario, double quantum dots (DQDs) appear as a versatile platform for technological breakthroughs in quantum computation and nanotechnology. This work inspects the thermal entanglement and quantum coherence in two-coupled DODs, where the system is exposed to an external stimulus that induces an electronic transition within each subsystem. The results show that the introduction of external stimulus induces a quantum level crossing that relies upon the Coulomb potential changing the degree of quantum entanglement and coherence of the system. Thus, the quantum properties of the system can be tuned by changing the transition frequency, leading to the enhancement of its quantum properties.