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Mesoscopic Quantum Optics
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News

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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09.10.2023

Work­shop on equal­ity and in­clu­sion

Some of our group members joined the workshop "PHOTONICS FUTURE - Profound | Equal | Inclusive". This workshop was specifically aimed at female scientists, who gave insights into their work and career. For more information visit the TRR142 website here.

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05.10.2023

Vis­it at the Uni­ver­sity of Iowa

On the 2nd and 3rd of October, Thomas Hummel visited the University of Iowa hosted by assistant Prof. R. Uppu from the "Quantum Light Control Lab". During this time there were various lab-tours and many discussions. Thomas also gave a guest lecture about the operation and control of SNSPDs.

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25.09.2023

New Pub­lic­a­tion from Fre­derik Thiele

In our publication, we explored a technique to operate an SNSPD all-optically at cryogenic temperatures. SNSPDs are superconducting single-photon detectors required for quantum optical measurements. Cryogenic operation temperatures are needed for these single photon sensitive devices. Typically, superconducting detectors are operated in a cryostat. Coaxial cables are then used to transmit power and signals between the cryogenic detector and the…

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18.09.2023

Con­grat­u­la­tions to Stefan Vor­werk

We congratulate Stefan Vorwerk for successfully defending his bachelor thesis about "Characterising laser-written periodic poling in nonlinear waveguides".

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Mesoscopic Quantum Optics

Warburger Str. 100
33098 Paderborn
Germany

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