About us

We study fundamental physics and applications of quantum states of light consisting of several 10, 100 and 1000 photons. This scale is crucial for demonstrating true quantum improvement over classical systems in many areas, including metrology, computation and communication.



The MQO group's research can be divided into three areas:

  • Development of the enabling technology (in the cleanroom)
  • Cryogenic nonlinear optoelectronics (in the optics lab)
  • Advanced quantum photonic data processing (on the computer)

Learn more on our research page.

Universität Paderborn, Besim Mazhiqi

Quantum sci­ence

Investigating the smallest particles of light has been a research focus at Paderborn University for many years. Recognized experts conduct excellent research in order to shape the future through concrete applications. In doing so, they are making a decisive contribution to quantum research in Germany and beyond.

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MQO in a nut­shell

Cryogenic Spontaneous Parametric Down-Conversion

Do you want to know how we performed the coldest SPDC experiment ever?

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Hut Seminars

In 2022 we started a tradition to go on "Hut seminars".

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All-optical readout of an SNSPD

Here we go into detail about all-optical readout of an SNSPD.

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Electro-Optic Modulators

Here we go into detail about our types of electro-optic modulators.

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Homodyne Detection with SNSPDs

Here we show how we did homodyne detection with SNSPDs.

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Photon-number resolution with SNSPDs

Here we show you how to gain photon-number resolution with SNSPDs.

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At a glance


Keep up with everything we do.

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Check out all of our publications.

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We are a diverse team, that works on different topics and projects. Together we find answers and are looking for people to enrich our team. Take a look at our job advertisments, we look forward to hearing from you.

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So­cial Me­dia

We regularly post on Instagram and YouTube.

Net­works and Pro­jects


Institute for Photonic Quantum Systems

ERC: European Re­search Coun­cil

QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications

TRR 142: Tailored Non­lin­ear Photon­ics: From Fun­da­ment­al Con­cepts to Func­tion­al Struc­tures

CeOPP: Cen­ter for Op­to­elec­tron­ics and Photon­ics


Quantum communication with integrated optics in the context of superconducting electronics


Photonic Integrated Quantum Computer


Photonic quantum computers

Where you can find us

05.05.2024 - 10.05.2024

CLEO US 2024 in North Car­o­lina, USA

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23.06.2024 - 27.06.2024

Quantum 2.0 in Rot­ter­dam, Neth­er­lands

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More events


Prof. Dr. Tim Bartley

Mesoscopic Quantum Optics

Room P8.3.13
Paderborn University
Pohlweg 47-49
33098 Paderborn