Attenuated light sources emit single photons in double-slit experiments using parametric down-conversion.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

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Is it true that attenuated light sources emit single photons in double-slit experiments using parametric down-conversion?

Yes. Multiple experimental demonstrations confirm that spontaneous parametric down-conversion sources effectively emit single photons for use in double-slit interference experiments.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked 4 Aug 2026

The analysis

The claim states that attenuated light sources or parametric down-conversion setups emit single photons for double-slit experiments. Papers [0] and [4] explicitly describe generating single photons via spontaneous parametric down-conversion to conduct double-slit interference demonstrations, fully supporting the claim.

Evidence for · 2

Video recording true single-photon double-slit interference

2016

The study demonstrates double-slit interference using single photons generated via parametric down-conversion.

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Aspden, R., Padgett, M., & Spalding, G. (2016). Video recording true single-photon double-slit interference. doi.org. https://doi.org/10.1119/1.4955173

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More for · 1

Young's double-slit interference demonstration with single photons

2024

The research confirms that single photons produced by spontaneous parametric down-conversion are successfully used in Young's double-slit interference demonstrations.

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Luo, B. J., Francis, L., Rodríguez-Fajardo, V., Galvez, E. J., & Khoshnoud, F. (2024). Young's double-slit interference demonstration with single photons. doi.org. https://doi.org/10.1119/5.0179131

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Receipt History

first checked04 Aug 2026

judged → SUPPORTED · 8604 Aug 2026

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