Coherently excited nonlocal quantum features using polarization-frequency correlation via a quantum eraser

TL;DR

This paper demonstrates how coherent manipulation of polarization-frequency correlations in photons can elucidate nonlocal quantum features, advancing understanding of quantum superposition and entanglement for potential macroscopic quantum information applications.

Contribution

It introduces a coherence-based approach to nonlocal correlations using polarization-frequency correlation and quantum eraser techniques with coherent photons.

Findings

Nonlocal quantum features are coherently explained through polarization-frequency correlation.

Delayed-choice quantum eraser experiments show classical bounds at 50% visibility.

The approach opens pathways for macroscopic quantum information processing.

Abstract

Indistinguishability is an essential concept to understanding mysterious quantum features in the view point of the wave-particle duality of quantum mechanics. The fundamental physics of the indistinguishability lies in quantum superposition of a single photon via orthogonal bases in a Hilbert space. Here, a pure coherence approach is applied to the nonlocal correlation using coherent photons manipulated for polarization-frequency correlation. For this, both wave mixing and heterodyne detection techniques are applied for the delayed-choice experiments of a quantum eraser using coherent photons to selectively choose entangled photon pair-like inseparable tensor, otherwise resulting in a typical classical bound with 50 % visibility in nonlocality. Thus, the mysterious quantum feature of nonlocal correlation is now coherently understood and may open the door to macroscopic quantum information processing.