Details
| Original language | English |
|---|---|
| Article number | 054001 |
| Journal | METROLOGIA |
| Volume | 61 |
| Issue number | 5 |
| Publication status | Published - 23 Jul 2024 |
| Externally published | Yes |
Abstract
We present a comprehensive metrological characterization of a commercial single-photon source with high photon flux emission for use in radiometry. The source is based on an InGaAs quantum dot in a micropillar. A comparative analysis of two excitation schemes—phonon-assisted excitation and two-photon excitation—explores differences in excitation power dependence, temporal stability and single-photon purity. The commercial source exhibits excellent properties for the field of quantum radiometry, achieving simultaneously a photon flux of (17.19 ± 0.09) million photons/s for a pulse repetition rate of 79.4 MHz, and a single-photon purity of 98%. Its optical power of (3.68 ± 0.02) pW is directly determined with a traceably calibrated low-noise photodiode. The ability to directly compare the photocurrent in a low-noise photodiode with the count rate at a single-photon avalanche detector allows for a seamless transition between the classical and quantum realizations of optical power. Therefore, we were able to build another bridge between classical and quantum radiometry by using a deterministic single-photon source.
Keywords
- calibration, optical power, photon flux, quantum radiometry, single-photon source
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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In: METROLOGIA, Vol. 61, No. 5, 054001, 23.07.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Metrological characterization of a commercial single-photon source with high photon flux emission
AU - Georgieva, Hristina
AU - Stepanov, Petr
AU - Sewidan, Leonora
AU - Pishchagin, Anton
AU - López, Marco
AU - Kück, Stefan
N1 - Publisher Copyright: © 2024 The Author(s). Published on behalf of BIPM by IOP Publishing Ltd.
PY - 2024/7/23
Y1 - 2024/7/23
N2 - We present a comprehensive metrological characterization of a commercial single-photon source with high photon flux emission for use in radiometry. The source is based on an InGaAs quantum dot in a micropillar. A comparative analysis of two excitation schemes—phonon-assisted excitation and two-photon excitation—explores differences in excitation power dependence, temporal stability and single-photon purity. The commercial source exhibits excellent properties for the field of quantum radiometry, achieving simultaneously a photon flux of (17.19 ± 0.09) million photons/s for a pulse repetition rate of 79.4 MHz, and a single-photon purity of 98%. Its optical power of (3.68 ± 0.02) pW is directly determined with a traceably calibrated low-noise photodiode. The ability to directly compare the photocurrent in a low-noise photodiode with the count rate at a single-photon avalanche detector allows for a seamless transition between the classical and quantum realizations of optical power. Therefore, we were able to build another bridge between classical and quantum radiometry by using a deterministic single-photon source.
AB - We present a comprehensive metrological characterization of a commercial single-photon source with high photon flux emission for use in radiometry. The source is based on an InGaAs quantum dot in a micropillar. A comparative analysis of two excitation schemes—phonon-assisted excitation and two-photon excitation—explores differences in excitation power dependence, temporal stability and single-photon purity. The commercial source exhibits excellent properties for the field of quantum radiometry, achieving simultaneously a photon flux of (17.19 ± 0.09) million photons/s for a pulse repetition rate of 79.4 MHz, and a single-photon purity of 98%. Its optical power of (3.68 ± 0.02) pW is directly determined with a traceably calibrated low-noise photodiode. The ability to directly compare the photocurrent in a low-noise photodiode with the count rate at a single-photon avalanche detector allows for a seamless transition between the classical and quantum realizations of optical power. Therefore, we were able to build another bridge between classical and quantum radiometry by using a deterministic single-photon source.
KW - calibration
KW - optical power
KW - photon flux
KW - quantum radiometry
KW - single-photon source
UR - http://www.scopus.com/inward/record.url?scp=85199535894&partnerID=8YFLogxK
U2 - 10.1088/1681-7575/ad615e
DO - 10.1088/1681-7575/ad615e
M3 - Article
AN - SCOPUS:85199535894
VL - 61
JO - METROLOGIA
JF - METROLOGIA
SN - 0026-1394
IS - 5
M1 - 054001
ER -