On-demand quantum correlation control using coherent photons

TL;DR

This paper compares traditional probabilistic entangled photon pairs with a new on-demand method using coherent light, revealing fundamental insights into quantum anticorrelation and proposing new physics for macroscopic entanglement.

Contribution

It introduces a novel on-demand entangled photon generation method using coherent light and explains the fundamental physics behind the absence of g^{(1)} correlation in HOM dip measurements.

Findings

No g^{(1)} correlation in HOM dip measurements explained

Proposes new coherence quantum physics for macroscopic entanglement

Demonstrates on-demand entangled photon generation using coherent light

Abstract

Over the last several decades, quantum entanglement has been intensively studied for potential applications in quantum information science. Although intensive studies have progressed for nonlocal correlation, fundamental understanding of entanglement itself is still limited. Here, the quantum feature of anticorrelation, the so-called HOM dip, based on probabilistic entangled photon pairs is analyzed for its fundamental physics and compared with a new method of on-demand entangled photon pair generations using coherent light. The fundamental physics why there is no g^((1)) correlation in HOM dip measurements is answered, and new coherence quantum physics is proposed for macroscopic quantum entanglement generations.