In:
Chinese Physics Letters, IOP Publishing, Vol. 37, No. 3 ( 2020-03-01), p. 034202-
Kurzfassung:
We propose and demonstrate a high efficiency broadband near infrared single-photon upconversion and detection with a broadband pump laser based on sum frequency conversion in the PPLN crystal. By using a pump laser centered at 1040 nm with a spectral bandwidth of 10 nm, the signal single-photons centered at 1562 nm with a broadband bandwidth up to 7.2 nm are frequency-converted from the near infrared to the visible regime. A maximum conversion efficiency of 18.8% is achieved, while the background noise is measured to be only 1.2 × 10 −3 counts/pulse. The corresponding spectral linewidth of the upconverted photons is 0.2 nm. This scheme of broadband infrared single-photon upconversion and detection provides potential solutions in infrared laser ranging, broadband infrared imaging and quantum key distribution.
Materialart:
Online-Ressource
ISSN:
0256-307X
,
1741-3540
DOI:
10.1088/0256-307X/37/3/034202
Sprache:
Unbekannt
Verlag:
IOP Publishing
Publikationsdatum:
2020
ZDB Id:
2040565-0
SSG:
6,25
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