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Superconducting Nanowire Single Photon Detector
Customized single photon detector for scientists who need the very best.
Single photon detectors for industrial Quantum Key Distribution (QKD) systems.
Precision imaging with SNSPD multipixel systems.
Scientific Publications
- A comparative analysis of InGaAs SPADs and SNSPDs in entanglement-based Quantum communications (2024) – IEEE Explore
- Continuous entanglement distribution over a transnational 248 km fiber link (2022) – Nature Communication
- Photon-number entanglement generated by sequential excitation of a two-level atom (2022) – Nature Photonics
- 600-km repeater-like quantum communications with dual-band stabilization (2021) – Nature Photonics
- Two-photon quantum interference and entanglement at 2.1 μm (2020) – Science Advances
- Photon bound state dynamics from a single artificial atom (2023) – Nature Physics
- High-rate entanglement between a semiconductor spin and indistinguishable photons (2023) – Nature Photonics
- Electro-Optical Sampling of Single-Cycle THz Fields with Single-Photon Detectors (2022) – Nature Communication
- Direct-bandgap emission from hexagonal Ge and SiGe alloys (2020) – Nature
- A gated quantum dot strongly coupled to an optical microcavity (2019) – Nature
- Deep Mouse Brain Two-Photon Near-Infrared Fluorescence Imaging Using a Superconducting Nanowire Single-Photon Detector Array (2024) – ACS Publications
- Integration of a superconducting nanowire detector into a confocal microscope for TRPL-mapping: Sensitivity and time resolution (2023) – AIP Publishing
- Interstitial null-distance time-domain diffuse optical spectroscopy using a superconducting nanowire detector (2023) – PubMed
- Deep confocal fluorescence microscopy with single-photon superconducting nanowire detector (2023) – SPIE Digital Library
- In vivo non-invasive confocal fluorescence imaging beyond 1,700 nm using superconducting nanowire single-photon detectors (2022) – Nature Nanotechnology
- High-performance photon number resolving detectors for 850–950 nm wavelength range (2024) – APL Photonics
- Ultra-high system detection efficiency superconducting nanowire single-photon detectors for quantum photonics and life sciences (2022) – Optica CLEO Journal
- Efficient mid-infrared single-photon detection using superconducting NbTiN nanowires with high time resolution in a Gifford-McMahon cryocooler (2022) – Optica Photonics Research
- Detecting telecom single photons with 99.5% system detection efficiency and high time resolution (2021) – APL Photonics
- Multimode-fiber-coupled superconducting nanowire single-photon detectors with high detection efficiency and time resolution (2019) – Optica Applied Optics
Application notes
Polarization-entangled photon sources and single-photon detectors are critical in many quantum applications. Here we demonstrate how to characterize such a source by coupling Single Quantum SNSPDs to Qunnect’s Qu-SRC.
Photon number resolving (PNR) detectors canrecognize the number of arriving photons in one detection event. Until now, single-photon detectors based on superconducting nanowires (SNSPDs) could only resolve the photon number by making a multi-pixel array of SNSPDs connected to a read-out circuit that determine how many pixels click simultaneously.
However, the need for more pixels increases the cost of the system and the probability that multiple photons are absorbed in the same pixel, reducing the photon number information.
Single Quantum has recently improved the timing jitter and recovery time of SNSPDs. This allows for a less complicated solution for PNR: with only one SNSPD, the PNR can be measured through a simple jitter measurement.
By pairing a superconducting nanowire single photon detector (SNSPD) with a Fourier transform spectrometer, a high-performance system with exceptional sensitivity and temporal resolution can be obtained.
With SNSPDs boasting >90% quantum efficiency in the near-infrared and up to 35% in the mid-infrared, this combination enables unprecedented sensitivity for time-resolved spectral measurements. Download the application note to explore how this system has been used by a research group at the University of Technology in Eindhoven, in collaboration with Nireos and PicoQuant, to study carrier dynamics in semiconductors and uncover new insights into photoluminescence spectra behavior.
There are two types of oscilloscopes to measure radio frequency (RF) signals: Real-time and Sampling oscilloscopes. Typically, sampling oscilloscopes provide more electrical bandwidth, but they need a repetitive signal to analyze. Often sampling scopes are used to analyze optical signals.
In this application note, we showcase how a superconducting single-photon detector (SNSPD) can be used to analyze low-power optical signals together with a time tagger. In the present work, we characterize a 200 ps wide pulse from a fast pulse generator.
Photon number resolving (PNR) detectors can recognize the number of arriving photons in one detection event.
Until now, single-photon detectors based on superconducting nanowires (SNSPDs) could only resolve the photon number by making a multi-pixel array of SNSPDs connected to a read-out circuit that determine how many pixels click simultaneously. However, the need for more pixels increases the cost of the system and still has the probability that multiple photons are absorbed in the same pixel, reducing the photon number information.
Single Quantum has improved the timing jitter and recovery time of SNSPDs. This allows for a less complicated solution for PNR: with only one SNSPD, the PNR can be measured through a simple jitter measurement.
Photon-correlation measurements are the backbone of quantum-optics experiments and are performed with dedicated hardware; a so-called “correlator”.
Under some circumstances, it would be beneficial to perform correlation measurements with an oscilloscope, because pulses and trigger levels can be visualized and the timing jitter is superior.
Typically, photon correlation experiments operate below 100 kCnts/s photons on each correlation channel. In this situation an RTO scope misses only a few percent of the incoming photons. In return a scope allows to perform the experiment in a What You See Is What You Get approach, making it easier to use than a traditional correlator.
The field of brain imaging uses various techniques to image the structure and function of the nervous system. It is an emerging discipline crossing the boundary of medicine and neuroscience that has seen tremendous advances in recent years.
The use of SNSPDs coupled to a confocal microscope operating in the SWIR opens up the possibility ofimaging biological structures 2 to 4 times deeper than previously possible with one-photon confocal fluorescence microscopy.
In this article, we show deep brain imaging achieved with infrared light while utilizing SNSPD’s.
Harness the power of SNSPDs
To tailor the optimal solution for you, our engineers will assist you, starting from understanding your needs and define the system specifications together with you.
