Disseminable single-photon source for quantum radiometry
We present a disseminable single-photon source based on an InGaAs quantum dot in a micro-mesa. This source achieves a maximum photon flux of (2.74 ± 0.03) × 106 photons/s at a wavelength of (929.7 ± 0.1) nm, with a multiphoton suppression of g(2)(0) = 0.22 ± 0.02. The semiconductor chip can be installed in any cryogenic system and the compact size of all optical components facilitates easy dissemination for interlaboratory comparisons. The consistency in results regarding single-photon purity and the similarity of the measured photon fluxes across two distinct laboratory environments underscores the robustness and versatility of this single-photon source, which shows its potential to be used as a standard source for interlaboratory comparisons in quantum radiometry.
Authors
- Stefan Kück (ORCID: https://orcid.org/0000-0003-2188-483X)
- Hristina Georgieva (ORCID: https://orcid.org/0000-0002-5539-0013)
- Niklas Kanold
- Oliver Slattery (ORCID: https://orcid.org/0009-0009-8673-6628)
- Arsenty Kaganskiy (ORCID: https://orcid.org/0000-0001-7803-8808)
- Alan L. Migdall (ORCID: https://orcid.org/0000-0002-8444-8288)
- Sven Rodt (ORCID: https://orcid.org/0000-0001-6275-4965)
- Thomas Gerrits (ORCID: https://orcid.org/0000-0001-8135-1811)
- Marco López (ORCID: https://orcid.org/0000-0002-0706-1418)
- Stephan Reitzenstein (ORCID: https://orcid.org/0000-0002-1381-9838)
- Riley B. Dawkins (ORCID: https://orcid.org/0009-0005-5824-0386)
- Lijun Ma (ORCID: https://orcid.org/0000-0002-7311-2631)
Institutions
- Physikalisch-Technische Bundesanstalt (DE)
- National Institute of Standards and Technology (US)
- Joint Quantum Institute (US)
- Technische Universität Berlin (DE)
- University of Maryland, College Park (US)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2024-12-23
- DOI
- https://doi.org/10.1063/5.0223170
- Citations
- 2
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 0.69
Funders
- European Commission
- Deutsche Forschungsgemeinschaft
- National Institute of Standards and Technology
- European Metrology Programme for Innovation and Research