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Latest from our Labs: Faster SNSPDs, 24/7 operation and even better timing precision

Innovation driving improved performance

Superconducting nanowire single-photon detectors (SNSPDs) represent the very best in single-photon detection, with near-ideal detection efficiency, unparalleled timing precision, ultra-low noise, and broadband operation.

As part of IDQ’s ongoing commitment to quality and performance, we are proud to show you results of our latest R&D efforts to further improve our SNSPD offering. In particular, here we present work based on a new set of processes and detector designs, providing enhanced timing precision, even faster single-photon counting, and continuous 24/7 system operation.

Ultrafast single-photon detection

Shortening the recovery time—the period after a detection event in which the detector is ‘blind’—is the key to unlocking higher count rates, to levels practical for scalable quantum communication and photonic quantum computing architectures.

Our new-and-improved processes were used in the fabrication of a set of multi-pixel detectors. Each pixel has a recovery time as low as 4.5 ns, giving us groundbreaking single-photon count rates above 1.6 GHz for a 14-pixel detector.

Best-in-class timing precision

Our SNSPDs have always been ultra-precise, but it gets even better, thanks to our new designs and processes. Reducing the timing jitter is key in resolving ever-smaller gaps in space and time, and maximizing the interference visibility required for advanced high-rate quantum communication and computing schemes.

In our multi-pixel SNSPD design, we obtain timing jitter as low as 20.7 ps FWHM, with an average of 22.4±1.8 ps across 14 pixels.


Round-the-clock operation

The ID281 system is equipped with a sorption unit to reach temperatures of 0.8 K, favourable for long-term detector performance. Operation of the sorption unit requires approximately one hour to recycle its helium supply, once per 24 to 40-hour (or sometimes longer) period.

With our new processes, sorption-free cooling with uninterrupted 24/7 operation becomes possible. This enables exciting new modes of operation for a wider range of extended-duration experiments, such as field-deployed quantum communication or optical quantum computing.

Find out more

Talk to us today to find out more about our new and upcoming additions to our range of SNSPDs and photonic sensing instrumentation.

Visit www.idquantique.com, or send a message to info@idquantique.com.


These developments were possible thanks to close collaboration with the Group of Applied Physics at the University of Geneva. The photograph of a multi-pixel device was kindly provided by Matthieu Perrenoud.

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