TY - JOUR
T1 - Multimode-fiber-coupled superconducting nanowire single-photon detectors with high detection efficiency and time resolution
AU - Chang, Jin
AU - Zadeh, Iman Esmaeil
AU - Los, Johannes W.N.
AU - Zichi, Julien
AU - Fognini, Andreas
AU - Gevers, Monique
AU - Dorenbos, Sander
AU - Pereira, Silvania F.
AU - Urbach, Paul
AU - Zwiller, Val
PY - 2019
Y1 - 2019
N2 - 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 µm, 25 µm, and 50 µm 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 µm SNSPDs. Also, we realized 70% system efficiency and <20 ps timing jitter for 50 µm SNSPDs. The high-efficiency multimode-fiber-coupled SNSPDs with unparalleled time resolution will benefit various quantum optics experiments and applications in the future.
AB - 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 µm, 25 µm, and 50 µm 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 µm SNSPDs. Also, we realized 70% system efficiency and <20 ps timing jitter for 50 µm SNSPDs. The high-efficiency multimode-fiber-coupled SNSPDs with unparalleled time resolution will benefit various quantum optics experiments and applications in the future.
UR - http://www.scopus.com/inward/record.url?scp=85077160058&partnerID=8YFLogxK
U2 - 10.1364/AO.58.009803
DO - 10.1364/AO.58.009803
M3 - Article
C2 - 31873623
SN - 1559-128X
VL - 58
SP - 9803
EP - 9807
JO - Applied Optics
JF - Applied Optics
IS - 36
ER -