The role of quantum superposition in a coupled interferometric system for macroscopic quantum feature generations

TL;DR

This paper explores how quantum superposition in a coupled interferometric system can generate macroscopic quantum features, bridging classical and quantum regimes for enhanced quantum information processing.

Contribution

It analyzes the role of path superposition in classical systems to reveal quantum features and enable conversion into quantum systems without violating quantum mechanics.

Findings

Superposition between binary bases is key to macroscopic entanglement.

Classical systems can exhibit quantum features through superposition.

The method enables quantum system conversion without violating quantum mechanics.

Abstract

Quantum entanglement is the quintessence of quantum information processing mostly limited to the microscopic regime governed by Heisenberg uncertainty principle. For practical applications, however, macroscopic entanglement gives great benefits in both photon loss and sensitivity. Recently, a novel method of macroscopic entanglement generation has been proposed and demonstrated in a coupled interferometric system using classical laser light, where superposition between binary bases in each interferometric system plays a key role. Here, the function of path superposition applied to independent bipartite classical systems is analyzed to unveil secrets of quantum features and to convert a classical system into a quantum system without violating quantum mechanics.