Bounding the outcome of a two-photon interference measurement using weak coherent states
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 s...
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| Veröffentlicht in: | Optics letters 2018-08, Vol.43 (16), p.3806-3809 |
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| container_title | Optics letters |
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| creator | Aragoneses, Andrés Islam, Nurul T Eggleston, Michael Lezama, Arturo Kim, Jungsang Gauthier, Daniel J |
| description | 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. |
| doi_str_mv | 10.1364/ol.43.003806 |
| format | Article |
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| ispartof | Optics letters, 2018-08, Vol.43 (16), p.3806-3809 |
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| language | eng |
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| source | Optica Publishing Group Journals |
| subjects | Interference Photonics Photons Quantum computing Quantum cryptography Quantum theory Upper bounds Visibility |
| title | Bounding the outcome of a two-photon interference measurement using weak coherent states |
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