Silicon photomultipliers (SiPMs) have numerous applications in high precision single-photon timing measurements, including LIDAR, biophotonics, and Positron-Emission-Tomography. Their ability to detect the photon number of scintillation events is a key feature to achieve high fidelity signals with very low noise levels. The extraction of the photon number from the detector output pulse is traditionally achieved with a fast ADC or with multiple level analog discriminators (time-over-threshold approach). Swabian Instruments together with KETEK GmbH demonstrated an alternative method using only a single input threshold and relying on signal pulse duration.
Time-correlated single-photon counting (TCSPC) is a measurement technique based on the detection of single photons and the measurement of their arrival time with high time resolution. Swabian Instruments together with Single Quantum demonstrated a commercially available TCSPC setup with a record-breaking low timing jitter. This measured correlation of a full two-photon coincidence with two detectors results in a total jitter of 7.6 ps RMS (18 ps FWHM) using a Single Quantum Eos SNSPD system and a pre-release unit of the new Swabian Instruments Time Tagger Ultra HiRes.
In November, the state of Baden-Württemberg awarded the Innovation Prize 2018 to small and medium-sized businesses from industry, crafts and technological services. The companies were honored for their outstanding developments and applications of new technologies. Dr. Nicole Hoffmeister-Kraut from the Ministry of Economic Affairs, Labor and Housing celebrated the companies’ achievements with prizes and awards and praised the young companies for developing and marketing these new technologies. “With the Innovation Award, we want to recognize the inventiveness and creativity of medium-sized companies who are boosting our economy here in the southwest”, she said.
Single-photon random sampling enables easy and precise measurements of optical signals – up to the THz regime
Single-photon counting has found broad applications within quantum technologies, such as quantum sensing, quantum information, and quantum communication. Recently it was proposed that low jitter single-photon detectors could be used to realize optical random sampling scopes with a bandwidth well beyond 100 GHz, a range not accessible with existing measurement instrumentation. This technique is suitable to support research on mode-locked lasers and next-generation electro-optical devices such as EOMs and VCSELs. Moreover, the optical sampling technique does not require the transmission of extreme fast electric signals over metal wires, which introduce increasing signal distortions and attenuation for high bandwidth signals.