Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams

Laiho K, Dirmeier T, Shafiee G, Marquardt C (2023)

Publication Type: Journal article

Publication year: 2023

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

DOI: 10.1088/1367-2630/ace791

Abstract

The Hong-Ou-Mandel (HOM) interference is one of the most intriguing quantum optical phenomena and crucial in performing quantum optical communication and computation tasks. Lately, twin beam emitters such as those relying on the process of parametric down-conversion (PDC) have become confident sources of heralded single photons. However, if the pump power is high enough, the pairs produced via PDC—often called signal and idler—incorporate multiphoton contributions that usually distort the investigated quantum features. Here, we derive the temporal characteristics of the HOM interference between heralded states from two independent narrowband PDC sources. Apart from the PDC multiphoton content, our treatment also takes into account effects arriving from an unbalanced beam splitter ratio and optical losses. We perform a simulation in the telecommunication wavelength range and provide a useful tool for finding the optimal choice for PDC process parameters. Our results offer insight in the properties of narrowband PDC sources and turn useful when driving quantum optical applications with them.

Authors with CRIS profile

Christoph Marquardt Chair of Optical Quantum Technologies

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE)

How to cite

APA:

Laiho, K., Dirmeier, T., Shafiee, G., & Marquardt, C. (2023). Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams. New Journal of Physics. https://doi.org/10.1088/1367-2630/ace791

MLA:

Laiho, Kaisa, et al. "Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams." New Journal of Physics (2023).

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