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  A primary radiation standard based on quantum nonlinear optics

Lemieux, S., Giese, E., Fickler, R., Chekhova, M., & Boyd, R. (2019). A primary radiation standard based on quantum nonlinear optics. Nature Physics, 15, 529-532. doi:10.1038/s41567-019-0447-2.

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 Creators:
Lemieux, Samuel1, Author
Giese, Enno1, Author
Fickler, Robert1, Author
Chekhova, Maria1, 2, Author           
Boyd, Robert1, Author
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1external, ou_persistent22              
2Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364715              

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 Abstract: The black body remains the most prominent source of light for absolute radiometry. Its main alternative, synchrotron radiation, requires costly and large facilities. Quantum optics offers a new radiometric source: parametric down-conversion (PDC), a nonlinear optical process, in which pairwise photon correlations enable absolute calibration of photodetectors. Since the emission rate crucially depends on the brightness of the electromagnetic field, quantum-mechanical fluctuations of the vacuum can be seen as a seed of spontaneous PDC, and their amplitude is a natural radiometric standard. Thus, they allow for the calibration of the spectral radiance of light sources by measuring the ratio between seeded and unseeded PDC. Here, we directly use the frequency spectrum of the electromagnetic vacuum to trigger spontaneous PDC and employ the generated light to infer the spectral response of a spectrometer over a broad spectral range. Then, we deduce the absolute quantum efficiency from the spectral shape of PDC in the high-gain regime, without relying on a seed or reference detector. Our results compare well with the ones obtained with a reference lamp, demonstrating a promising primary radiation standard.

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Language(s): eng - English
 Dates: 2019-03-042019-03-04
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41567-019-0447-2
 Degree: -

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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: 15 Sequence Number: - Start / End Page: 529 - 532 Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850