Bounding the outcome of a two-photon interference measurement using weak coherent states.
Journal Article (Journal Article)
The interference of two photons at a beam splitter is at the core of many quantum photonic technologies, such as quantum key distribution or linear-optics quantum computing. Observing high-visibility interference is challenging because of the difficulty of realizing indistinguishable single-photon sources. Here, we perform a two-photon interference experiment using phase-randomized weak coherent states with different mean photon numbers. We place a tight upper bound on the expected coincidences for the case when the incident wavepackets contain single photons, allowing us to observe the Hong-Ou-Mandel effect. We find that the interference visibility is at least as large as 0.995-0.013+0.005.
- Aragoneses, A; Islam, NT; Eggleston, M; Lezama, A; Kim, J; Gauthier, DJ
- August 2018
Volume / Issue
- 43 / 16
Start / End Page
- 3806 - 3809
Electronic International Standard Serial Number (EISSN)
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)