Related Experiment Video
Updated: Feb 25, 2026
10:42
Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
6.6K
1.064-μm-band up-conversion single-photon detector.
Optics Express
|August 10, 2017
Summary
Researchers demonstrate efficient up-conversion single-photon detection at 1.064 μm using periodically poled lithium niobate waveguides. This technology achieves high detection efficiency with low noise, offering practical applications in various fields.
Area of Science:
- Quantum optics
- Photonics
- Materials science
Background:
- Single-photon detectors are crucial for quantum information processing and sensitive measurements.
- Up-conversion detection offers advantages for specific wavelength ranges, but challenges remain in efficiency and noise reduction.
Purpose of the Study:
- To demonstrate a practical and efficient up-conversion single-photon detector operating at 1.064 μm.
- To explore the use of periodically poled lithium niobate (PPLN) waveguides for enhanced photon detection.
Main Methods:
- Utilized periodically poled lithium niobate (PPLN) waveguides for nonlinear frequency conversion.
- Employed a 1.55-μm-band single-frequency laser for long-wavelength pumping.
- Implemented a volume Bragg grating (VBG) as a narrow-band filter, and alternatively, dielectric filters.
Main Results:
- Achieved a system photon detection efficiency of 32.5% with a low noise count rate of 45 counts per second using VBG filtering.
- Attained up to 38% detection efficiency with a noise count rate of 700 counts per second using dielectric filters, ensuring system stability and practicality.
Conclusions:
- The developed up-conversion single-photon detector operating at 1.064 μm is a promising robust counter.
- The PPLN waveguide technology offers a practical solution for high-performance single-photon detection in various applications.
