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Discover the power of PPKTP

Singe photon detector

Single Photon Upconversion Detector 

Quantum Communication & Quantum Key Distribution (QKD)
This is one of the primary application areas.

  • 1550 nm is the standard wavelength for fiber-optic networks due to low transmission loss

  • QKD systems require reliable single-photon detection

  • Upconversion enables detection using silicon APDs, offering:

    • Low dark count rates

    • Reduced afterpulsing

    • No cryogenic cooling

Quantum Optics & Fundamental Research
Used for studying:

  • Entangled photon pairs at telecom wavelengths

  • Heralded single-photon sources

  • Photon statistics and correlation measurements

Room-temperature operation provides high stability.

LIDAR
For eye-safe LIDAR systems at 1550 nm:​

  • Enables long-range and low-signal detection

Applications include:

  • Long-range LIDAR

  • Topographic mapping

  • Defense and aerospace systems

Why Use UpConversion Detection?

  • Room-temperature operation

  • Significantly lower dead time

  • Excellent timing resolution

  • No afterpulsing effects

  • High long-term stability

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