  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.
