We congratulate Niklas Lamberty for successfully defending his master thesis about "Cryogenic electronic interconnects between superconducting nanowire single photon detectors and electro-optics for feed-forward".
We are happy that he will stay in the group to continue with his PhD.
Last Friday, we enjoyed a sunny afternoon in the Haxtergrund, which is a forest park close to university. Just before the time change, we went on an easy group hike together to make use of one of the last days with longer daylight. The weather was awesome, providing a lot of sunlight and about 20°C for our group event. We all enjoyed the hike and the great view we had on the colorful autumn trees.
In our latest publication from Timon Schapeler, we have collaborated with the Paderborn Center for Parallel Computing (PC2) to combine the two fields of experimental quantum optics and high-performance computing for the first time. We provided the experimental data on a large scale quantum detector, capable of detecting one million photons, to characterize it in a quantum mechanically consistent way. Due to the size of the detector (and thus the…
We took lots of videos and photos during our “Hut Seminar 2024”. We have now created a YouTube video from this material. You can find it here on YouTube. We also have a link to our website here, where you can also watch the video and get additional information.
Last week, we had an amazing time at Quantum Photonics Spotlight 2024 (QPS 2024). It was the first international conference organized by the Institute for Photonic Quantum Systems (PhoQS) at the Congress Centre of the Heinz Nixdorf Museums Forum (HNF) in Paderborn. Five members from our group showcased their research through posters, contributing to a vibrant exchange of ideas and insights throughout the event.
These are our contributions:
Ai…
Last week, three of our female scientists attended the Workshop “PHOTONICS FUTURE. Profound | Equal | Inclusive” which took place for the second time in Bad Driburg. The 1,5-day workshop was organized as a joint event between the Institute for Photonic Quantum Systems (PhoQS) and the CRC TRR 142. During the workshop, renowned female scientists were invited to share their latest research results and to present insights into their career paths. The…
At the end of August, our group once again did a 'hut seminar' in the mountains. The entire group travelled to Schoppernau in Vorarlberg, Austria. During the week, we discussed both scientific and non-scientific topics and were able to get to know each other even better. Of course, we also went on some hikes in the mountains. You can find more information and pictures on this page.
Our main tool for quantum optics are single photon detectors. We especially use superconducting single-photon detectors since they are one of the best performing detectors on the market. However, these detectors require cryogenic operation temperatures. That means for us that we can only operate a limited number of detectors in a single cryostat. To conduct experiments with more detectors and show more elaborate setups, we require more scalable…
This week, Amélie De Koninck completed the first part of her voluntary student internship in our group. With us, she was able to gain many impressions of experimental physics, especially quantum optics. Together with Timon Schapeler, who supervised the internship, she experienced everyday life in the laboratory. The aim was to investigate the statistics of attenuated laser light using a 4-bin multiplexed single-photon detector. To do this, Amélie…
Yesterday we had our summer group event at the new Adventure Golf course in Paderborn at the Fischteiche. We had a lot of fun and our group members and their families enjoyed the beautiful weather and the sun. At the end of the evening we all had dinner together in an Italian restaurant.
In this two-dimensional histogram, the elliptical clusters correspond to different photon-number events registered by the SNSPD. This is a result from the principal component analysis (PCA), which was applied in this work.
Recently, it has been shown that so-called "superconducting nanowire single photon detectors" (SNSPD) can not only provide information about the presence or absence of photons, but also resolve the number of incident photons in a laser pulse. In this work, we investigated where this photon-number information is located on the electrical output signal (trace) of the SNSPD and how it can be best retrieved in an experiment. We did this by recording…
Last week four members of our group went to the Quantum 2.0 conference in Rotterdam, Netherlands. They enjoyed a great meeting and had a lot of time to network and talk about their work.
We contributed with two presentations and one poster:
Timon Schapeler talked about "Photon-number resolution with SNSPDs via statistical analysis of electrical traces" Frederik Thiele talked his work about "Opto-Electronic Operation of an SNSPD with a…
Two of our group members contributed to a conference in Gaeta, Italy last week. It was a meeting of the Horizon 2020 FET OPEN project Stormytune with the name "Spectral-Temporal Metrology with Tailored Quantum Measurements".
Aishi Barua presented her poster about "Investigating Homodyne Detection with Squeezed Light as the Local Oscillator". Lorenzo Procopio presented his talk about "Quantum Metrology Enhancement using Indefinite casual…
Last week three members went to the conference CLEO in Charlotte. The conference was about Lasers, electro-optics, and photonic applications. In addition, our former colleague Maximilian Protte joined us again and presented work which was realized in Paderborn. We presented our works in contributing talks and poster presentations:
Niklas Lamberty: Maximizing photon-number resolution from an SNSPD Maximilian Protte: Performing Balanced…
