A coherently excited Franson-type nonlocal correlation

TL;DR

This paper presents a classical physics-based coherence approach to Franson-type nonlocal correlations, replicating quantum joint-phase relations using synchronized laser light and acousto-optic modulators.

Contribution

It introduces a classical coherence framework for nonlocal correlations that traditionally require quantum entanglement, offering new insights into quantum phenomena interpretation.

Findings

Classical coherence can mimic quantum nonlocal correlations.

Phase-matched photon pairs are generated via synchronized laser modulation.

The classical approach reproduces quantum joint-phase relations.

Abstract

Entanglement is the basic building block of quantum technologies whose property is in the unique quantum feature of nonlocal realism. However, such a nonlocal quantum property is known as just a weird phenomenon that cannot be obtained by any classical means. Recently, the mysterious quantum phenomena have been coherently interpreted using entangled photon pairs, where the quantum mystery has been found in the manipulated product-basis superposition of paired photons. Here, a coherence version of the Franson-type nonlocal correlation is presented by all means of classical physics. The resulting coherence solutions of the nonlocal correlation satisfy the same joint-phase relation of local parameters as in the quantum version. For the nonlocal correlation fringe, coherent manipulations of attenuated laser light are conducted by synchronized acousto-optic modulators to generate random but phase-matched photon pairs.