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Mesoscopic Quantum Optics
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News

16.02.2024

New Pub­lic­a­tion from Fre­derik, Thomas and Nina

We build photonic circuits for quantum optics with the material system lithium niobate. The material system enables us to realize several devices such as quantum light sources and modulators. For several applications we need to cool the material system down to cryogenic temperatures (below 10K). The challenge with photonic circuits is to maintain a high device performance at cryogenic temperatures. We managed to maintain a good performance for…

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13.02.2024

Wel­come Aishi Barua!

We welcome Aishi Barua as a new PhD student in our group. 

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06.02.2024

PaderPhy Pod­cast fea­tur­ing Prof. Bartley

The latest episode of the "PaderPhy - Der Paderborner Physik Podcast" features Prof. Bartley. Check it out here.

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Dr. Maximilian Protte talks about our newest publication on low-noise balanced homodyne detection with superconducting nanowire single-photon detectors.
05.02.2024

New You­Tube Video with Max­imili­an Protte

We just posted a new video about our latest publication in Optica Quantum from Maximilian Protte and Timon Schapeler. In this video Maximilian talks about the experiment and the results. It can be found here, it was edited by Jessika Bruns. The original news article can be found here and the publication here.

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31.01.2024

Con­grat­u­la­tions to Isa­bell Mis­ch­ke

We congratulate Isabell Mischke for successfully defending her bachelor thesis about "Broadband Characterization of Superconducting Nanowire Single-Photon Detectors".

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23.01.2024

Con­grat­u­la­tions to Max­imili­an Protte on re­ceiv­ing an award for his dis­ser­ta­tion

Our former group member Maximilian Protte was awarded for an excellent dissertation at the 2024 New Year’s Reception at Paderborn University.

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Phase-dependent nonlinear quadrature operator for the vacuum state and a weak coherent state [https://doi.org/10.1364/OPTICAQ.502201].
08.01.2024

New pub­lic­a­tion from Max­imili­an Protte und Ti­mon Schapel­er

Have you ever thought of using superconducting single-photon detectors for homodyne detection? In our newest publication we show how we used superconducting nanowire single-photon detectors (SNSPDs) to study the continuous variables of optical quantum states using homodyne detection. From the joint click statistics of two SNSPDs we measured the phase-dependent quadrature of a weak coherent state, which was interfered with a continuous wave local…

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18.12.2023

How do you ex­cite curi­os­ity about study­ing phys­ics at school?

As we are part of the Institute for Photonic Quantum Systems (PhoQS), multiple members of our group participate in the PhoQS school program. We want to raise the interest of school students in the fascinating world of physics and quantum optics. We visit physics classes of the upper school and give exclusive insights in the physics studies and what it is like to work in an academic research group. Moreover, this is a great chance for the pupils…

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13.12.2023

Max' Good­bye

Yesterday we said goodbye to Max, as he will leave the group after almost five years in our group. We met in the afternoon to have eat pizza together, play games and had a lot of fun, especially at "Uno mit Zwischenlegen". Thanks for all your work, and being a big part of our group!

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11.12.2023

Vis­it­ing the christ­mas mar­ket

Together as a group we went to the christmas market to have some nice food. Besides that it was a nice opportunity to chat.

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27.11.2023

Fac­ulty Cel­eb­ra­tion of the Nat­ur­al Sci­ences

We congratulate all students who graduated this year in the faculty of natural sciences. In particular all students which graduated from our group: Markus Brieden, Stefan Vorwerk, Maximilian Protte, Niklas Schröder and Frederik Thiele.   

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26.10.2023

Con­grat­u­la­tions to Fre­derik Thiele

We congratulate Frederik Thiele who successfully defended his PhD thesis titled "Opto-electronics for quantum communication at cryogenic temperatures" and was awarded the "Dr. rer. nat." degree by the Faculty of Science at Paderborn University.

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23.10.2023

MQO at EQTC in Han­over, Ger­many

Four people from our group contributed with posters at the European Quantum Technologies Conference in Hannover, Germany. Nina Lange showed her work about "Cryogenic Degenerate Spontaneous Parametric Down-Conversion" Frederik Thiele presented his poster titled "All-optical operation of a superconducting opto-electronic circuit" Thomas Hummel showed a poster about "Cryogenic electronics for integrated SNSPDs" Timon Schapeler presented his work…

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23.10.2023

MQO at FiO+LS in Ta­coma, USA

We contributed with one presentation and one poster to the Frontiers in Optics + Laser Science Meeting in Tacoma, USA. Maximilian Protte presented a poster about "Strong-Field Homodyne Detection with Superconducting Nanowire Single-Photon Detectors". Thomas Hummel presented at talk about "Gated- and optical biasing for SNSPDs".

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10.10.2023

Con­grat­u­la­tions to Nik­las Schröder

We congratulate Niklas Schröder for successfully defending his bachelor thesis about "Laser intensity stabilization for experiments in quantum optics".

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Mesoscopic Quantum Optics

Warburger Str. 100
33098 Paderborn
Germany

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