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Multimode-fiber-coupled superconducting nanowire single-photon detectors with high detection efficiency and time resolution
Delft Univ Technol, ImPhys Dept, Opt Res Grp, Fac Appl Sci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands..
Delft Univ Technol, ImPhys Dept, Opt Res Grp, Fac Appl Sci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands..
Single Quantum BV, NL-2628 CH Delft, Netherlands..
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum and Biophotonics.ORCID iD: 0000-0003-1831-2208
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2019 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 58, no 36, p. 9803-9807Article in journal (Refereed) Published
Abstract [en]

In the past decade, superconducting nanowire single-photon detectors (SNSPDs) have gradually become an indispensable part of any demanding quantum optics experiment. Until now, most SNSPDs have been coupled to single-mode fibers. SNSPDs coupled to multimode fibers have shown promising efficiencies but have yet to achieve high time resolution. For a number of applications ranging from quantum nano-photonics to bio-optics, high efficiency and high time resolution are desired at the same time. In this paper, we demonstrate the role of polarization on the efficiency of multimode-fiber-coupled detectors and fabricated high-performance 20 mu m, 25 mu m, and 50 mu m diameter detectors targeted for visible, near-infrared, and telecom wavelengths. A custom-built setup was used to simulate realistic experiments with randomized modes in the fiber. We achieved over 80% system efficiency and <20 ps timing jitter for 20 mu m SNSPDs. Also, we realized 70% system efficiency and <20 ps timing jitter for 50 mu m SNSPDs. The high-efficiency multimode-fiber-coupled SNSPDs with unparalleled time resolution will benefit various quantum optics experiments and applications in the future.

Place, publisher, year, edition, pages
Optical Society of America, 2019. Vol. 58, no 36, p. 9803-9807
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-266739DOI: 10.1364/AO.58.009803ISI: 000504929200011PubMedID: 31873623Scopus ID: 2-s2.0-85077160058OAI: oai:DiVA.org:kth-266739DiVA, id: diva2:1386306
Note

QC 20200117

Available from: 2020-01-17 Created: 2020-01-17 Last updated: 2020-01-17Bibliographically approved

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Zichi, JulienZwiller, Val

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