CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10353 > Article
Open Access Presentation
11 October 2017 Ultrafast single photon detectors (Conference Presentation)
Wolfram Pernice, Simone Ferrari
Author Affiliations +
Proceedings Volume 10353, Optical Sensing, Imaging, and Photon Counting: Nanostructured Devices and Applications 2017; 1035308 (2017) https://doi.org/10.1117/12.2273354
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States
Abstract
Nanophotonic integrated circuits are emerging as a promising platform for quantum photonics. A key building block are waveguide integrated detectors with superior performance. Detectors based on superconductor nanowires (SNSPDs) attached to optical waveguides have been shown to provide high efficiency and good timing performance, as well as broad bandwidth. To move towards applications in high bandwidth quantum communication and processing, ultrafast single-photon detectors with high efficiency are needed. The speed of meander type SNSPDs is limited because the required high absorption efficiency necessitates long nanowires deposited on top of the waveguide. This enhances the kinetic inductance and makes the detectors slow. We overcome this problem by aligning the nanowire perpendicular to the waveguide to realize devices with a length below 1 µm. By integrating the nanowire into a photonic crystal cavity, we recover high absorption efficiency, thus enhancing the detection efficiency by more than an order of magnitude. Our cavity enhanced superconducting nanowire detectors are fully embedded in silicon nanophotonic circuits and efficiently detect single photons at telecom wavelengths. The detectors possess sub-nanosecond decay (~ 120 ps) and recovery times (~ 510 ps), and thus show potential for GHz count rates at low timing jitter (~ 32 ps).
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Wolfram Pernice and Simone Ferrari "Ultrafast single photon detectors (Conference Presentation)", Proc. SPIE 10353, Optical Sensing, Imaging, and Photon Counting: Nanostructured Devices and Applications 2017, 1035308 (11 October 2017); https://doi.org/10.1117/12.2273354
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Sensors
Single photon detectors
Waveguides
Nanophotonics
Superconductors
Ultrafast phenomena
Absorption
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top