Home > Technology > Gating

Gated SNSPDs

On-off operation

Gated superconducting single photon detectors

Enhance your signal-to-noise ratio with high precision filtering

In applications where background noise reduction and temporal filtering are crucial, the swift activation and deactivation of the photon detectors are often needed. Additionally, in experiments involving resonant-excitation-collection, fast gating can be a game-changer for filtering out undesired photons, eliminating the need for cross-polarization techniques and their inherent losses.

Single Quantum has developed fast-gated SNSPDs that allows full efficiency restoration in less than 5 ns, with a gate window of 20 ns: the perfect choice for cutting-edge experiments which require rapid temporal filtering with flexible photon detection window.

These gated single photon detectors excel in demanding applications such as fluorescence spectroscopy, single-photon LiDAR, quantum communication, and microscopy, making them an essential tool for the most advanced research.

Highlights

  • Available as an add-on
  • Enhanced SNR
  • Fast turn on/off time
  • Different gating speeds available
  • Dark count reduction
  • Excitation filtering

The fastest solution on the market

How does it work?

Our detectors are controlled using an external waveform generator that provides a square gate to the SNSPD. Given the inductive nature of the device, the turn-on time is not instantaneous. Consequently, the time required to restore full efficiency becomes the determining factor for the operational speed of the gated SNSPD.

Single Quantum offers a range of gating speeds, coupled with high efficiency and minimal timing jitter, to effectively address the physical limitations of SNSPDs.

Get in touch for more insights!