Detecting single photons on the tip of an optical fiber

Prof. Eyal Buks | Electrical and Computer Engineering


Physics and Electro-Optics

The Technology

Current Superconducting Nanowire Single Photon Detectors (SSPD or SNSPD) are expensive, large and have low detection efficiency as they are partially transparent and photon impinging upon them might pass through instead of being detected.

The new system consists of two parts: the superconducting nanowire and the optical cavity. The nanowire detector is placed on the tip of an optical fiber during the fabrication process and does not need to be aligned to the light during operation time. Then it is placed inside an optical cavity which enhances the percentage of light absorbed in the detector.


  • Cost effective
  • Operation is simple and faster compared to current systems
  • Highly effective light detection

Applications and Opportunities

  • Sensitive detector
  • Quantum communication
  • Astronomy
  • Deep space communication
arrow Business Development Contacts
Shikma Litmanovitz
Director of Business Development, Physical Science