Analysis of photon characteristics in anticorrelation of a Hong-Ou-Mandel dip for on-demand quantum correlation control

TL;DR

This paper investigates the fundamental physics of photon anticorrelation in Hong-Ou-Mandel interference, analyzing entangled photon pairs and proposing a coherence optics-based scheme for quantum correlation control.

Contribution

It provides new insights into the anticorrelation phenomena in HOM experiments and introduces a coherence optics-based scheme for quantum correlation control.

Findings

Observation of wavelength-sensitive interference fringes in HOM dip

Analysis of entangled photon pairs generated by SPDC

Proposal of a coherence optics-based HOM scheme

Abstract

Over the last several decades, quantum entanglement has been intensively studied for potential applications in quantum information science. The Hong-Ou-Mandel (HOM) dip is the most important test tool for direct proof of entanglement between paired photons, whose coincidence detection results in anticorrelation due to photon bunching on a beam splitter. Although anticorrelation is due to destructive quantum interference between paired photons, a wavelength-sensitive interference fringe has never been observed in any HOM-type experiments. Here, a typical HOM dip is investigated for entangled photon pairs generated by parametric down conversion processes (SPDC) to understand fundamental physics of anticorrelation. In addition, a pure coherence optics-based Hong-Ou-Mandel scheme is proposed and analyzed for general understanding of anticorrelation in an interferometric system. This study sheds light on deterministic quantum correlation control and opens the door to potential applications of on-demand quantum information science.