Tapered InP nanowire arrays for efficient broadband high-speed single-photon detection

Sandra J. Gibson, Brad van Kasteren, Burak Tekcan, Yingchao Cui, Dick van Dam, Jos E.M. Haverkort, Erik P.A.M. Bakkers, Michael E. Reimer (Corresponding author)

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Superconducting nanowire single-photon detectors with peak efficiencies above 90% and unrivalled timing jitter (<30 ps) have emerged as a potent technology for quantum information and sensing applications. However, their high cost and cryogenic operation limit their widespread applicability. Here, we present an approach using tapered InP nanowire p-n junction arrays for high-efficiency, broadband and high-speed photodetection without the need for cryogenic cooling. The truncated conical nanowire shape enables a broadband, linear photoresponse in the ultraviolet to near-infrared range (~500 nm bandwidth) with external quantum efficiencies exceeding 85%. The devices exhibit a high gain beyond 10 5, such that a single photon per pulse can be distinguished from the dark noise, while simultaneously showing a fast pulse rise time (<1 ns) and excellent timing jitter (<20 ps). Such detectors open up new possibilities for applications in remote sensing, dose monitoring for cancer treatment, three-dimensional imaging and quantum communication.

Originele taal-2Engels
Pagina's (van-tot)473-479
Aantal pagina's8
TijdschriftNature Nanotechnology
Nummer van het tijdschrift5
StatusGepubliceerd - 4 mrt 2019


Citeer dit

Gibson, S. J., van Kasteren, B., Tekcan, B., Cui, Y., van Dam, D., Haverkort, J. E. M., ... Reimer, M. E. (2019). Tapered InP nanowire arrays for efficient broadband high-speed single-photon detection. Nature Nanotechnology, 14(5), 473-479. https://doi.org/10.1038/s41565-019-0393-2