Detecting single infrared photons with 93% system efficiency
Francesco Marsili,Varun B. Verma,Jeffrey A. Stern,Sean D. Harrington,Adriana E. Lita,Thomas Gerrits,Igor Vayshenker,Burm Baek,M. D. Shaw,Richard P. Mirin,Sae Woo Nam +10 more
TLDR
In this article, a fiber-coupled single-photon detection system using amorphous tungsten silicide superconducting nanowire detectors was developed, and the system detection efficiency was higher than 90% in the wavelength range between 1520 nm and 1610 nm.Abstract:
Researchers develop a fiber-coupled single-photon-detection system using amorphous tungsten silicide superconducting nanowire single-photon detectors. The system detection efficiency is higher than 90% in the wavelength range between 1520 nm and 1610 nm. The device dark-count rate, timing jitter and reset time are 1 cps, 150 ps and 40 ns, respectively.read more
Citations
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Proceedings ArticleDOI
Dark counts in superconducting single-photon NbN/NiCu detectors
Loredana Parlato,Umberto Nasti,Mikkel Ejrnaes,R. Cristiano,Hiroaki Myoren,Roman Sobolewski,G. P. Pepe +6 more
TL;DR: In this article, a vortex-related fluctuation model was proposed to explain the dark count in superconducting nanostripe single photon detectors, and the observed significant decrease of the dark-count rate was discussed in terms of vortex related fluctuation models to shed more light in the intriguing question of the basic mechanism responsible for dark counts.
Journal ArticleDOI
Niobium nitride plasmonic perfect absorbers for tunable infrared superconducting nanowire photodetection.
Philipp Karl,Sandra Mennle,Monika Ubl,Philipp Flad,Jing-Wei Yang,Tzu-Yu Peng,Yu-Jung Lu,Harald Giessen +7 more
TL;DR: A superconducting niobium nitride plasmonic perfect absorber structure is presented and its tunable plasMonic resonance is used to create a polarization dependent photodetector with near-100% absorption efficiency in the infrared spectral range.
Proceedings ArticleDOI
Large area Superconducting Nanowire Single Photon detector arrays
TL;DR: In this article, the authors demonstrate fabrication and full optical testing of an array of 2×2 SNSPDs, using nanowires in parallel configuration, covering an active area of 30 × 30 μm and low timing jitter (FWHM ~ 70 ps).
Journal ArticleDOI
Optimal implementation of two-qubit linear-optical quantum filters
TL;DR: This work designs optimal interferometric schemes for implementation of two-qubit linear optical quantum filters diagonal in the computational basis and extends the analysis also to asymmetric and complex filters.
Journal ArticleDOI
Probing quantum correlation functions through energy-absorption interferometry
TL;DR: In this paper, an interferometric technique is described for determining the spatial forms of the individual degrees of freedom through which a many-body system can absorb energy from its environment.
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