UPB Bildmarke
Mesoscopic Quantum Optics
Contact
  • Deutsch
  • English
  • Research
  • Publications
  • Persons
  • News
  • Jobs
    • Open Page "Resources"
    • Downloads
    • Paper videos
    • Conference presentations
    • Other Videos
  • Contact
Important Links
  • Paderborn University
  • Faculty of Mechanical Engineering
  • Faculty of Computer Science, Electrical Engineering and Mathematics
  • Faculty of Business Administration and Economics
  • Faculty of Science
  • Faculty of Arts and Humanities
  1. Faculty of Science
  2. Department of Physics
  3. Mesoscopic Quantum Optics
  4. News

News

07.06.2022

New pub­lic­a­tion from Fre­derik Thiele

In our new publication we show the operation of lithium niobate modulators at cryogenic temperatures. We have previously shown the operation of a polarisation converter at 1K. To show the full capabilities of lithium niobate modulators at cryogenic temperature we characterised a phase modulator, directional coupler, and a polarisation converter. These modulators were characterised in respect to their modulation voltage and wavelength dependence…

Read more
Nina Lange presenting her talk in front of roughly 50 people.
03.06.2022

MQO group at CLEO 2022 in San Jose

Six members of the MQO group went to the Conference on Lasers and Electro-Optics (CLEO) from May 15th-20th, 2022 in San Jose. We presented five contributions: Jan Philipp Höpker - Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity (Poster) Frederik Thiele - Cryogenic Optical Biasing of a Superconducting Nanowire Single Photon Detector With a Photodiode (Talk) Maximilian Protte - Direct Laser Lithography:…

Read more
03.06.2022

Vis­it­ing NIST in Boulder, Col­or­ado

The week before the Conference on Lasers and Electro-Optics (CLEO) two members of the MQO group (Jan Philipp Höpker and Maximilian Protte) visited the National Institute of Standards and Technology (NIST) in Boulder, Colorado, USA. They were shown their laboratories and had great discussions about superconducting detector technology.

Read more
29.03.2022

Jun.-Prof. Dr. Tim Bartley re­ceives ERC Grant

Jun.-Prof. Dr. Tim Bartley, physicist at Paderborn University receives a "ERC Starting Grant" from the European Research Council. The highly endowed "Starting Grant" supports particularly promising scientists who are at the beginning of an independent research career.  The project „Quantum Engineering Superconducting Array Detectors in Low-Light Applications" (QuESADILLA) will focus on developing efficient single-photon detectors for tasks in…

Read more
23.03.2022

New pub­lic­a­tion from Max­imili­an Protte

In our paper, we demonstrate the fabrication of micron-wide superconducting nanowire single-photon detectors with a direct laser lithography. This patterning method offers a fast and rapid prototyping of devices and can be used for all types of integrated components in lithium niobate. We were able to show a saturated internal detection efficiency for detectors with an unfolded length of up to 4 mm showing the potential for patterning large areas…

Read more
16.03.2022

Con­grat­u­la­tions to Fe­lix Dre­her

We congratulate Felix Dreher who has successfully completed his master thesis titled "Overcoming pyroelectric damage to integrated superconducting detectors on lithium niobate waveguides".

Read more
14.03.2022

Con­grat­u­la­tions to Jan Phil­ipp Höp­ker

We congratulate Jan Philipp Höpker who successfully defended his PhD thesis titled "Integrated measurement-induced nonlinearity with superconducting detectors" and was awarded the "Dr. rer. nat." degree by the Faculty of Science at Paderborn University.

Read more
14.03.2022

Wel­come Jo­hanna!

We welcome Johanna Biendl as a new PhD student.

Read more
20.01.2022

New pub­lic­a­tion from Nina Ame­lie Lange (with video)

In our paper, we demonstrate the coldest spontaneous parametric down-conversion (SPDC) experiment that was done so far. We show that SPDC in nonlinear waveguides, which is typically performed under ambient conditions, remains functional when it is operated at about 4 K. We investigate the source performance metrics and the spectral properties of our SPDC source. Our results indicate that cryogenics principally affect the modes which the SPDC…

Read more
20.12.2021

Con­grat­u­la­tions to Jo­hanna Biendl

We congratulate Johanna Biendl who has successfully completed her master's studies titled "3D Lithography of Micro-Structured Etalon Arrays for Single-Photon Spectrometry".

Read more
06.12.2021

Vis­it­ing stu­dents from MINT-EC-Camps

Students from the MINT-EC-Camps visited the university of Paderborn, and the MQO-lab. The focus was on all the lasers being used, and why we need them. For more information (German)

Read more
11.11.2021

QIM VI 2021

From November 1st till November 5th was the digital QIM VI conference 2021. The MQO group contributed with a talk from Timon Schapeler. His presentation can be found under the following link.

Read more
26.10.2021

Grouphike

The group made a hike for the Campus Wald project. We walked 10km and planted multiple trees this way.

Read more
01.10.2021

New pub­lic­a­tion from Jan Phil­ipp Höp­ker

In our new paper, we demonstrate the integration of amorphous tungsten silicide superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently coupled photons of 1550 nm wavelength using bidirectional waveguide coupling for two orthogonal polarization directions. We investigate the internal detection efficiency as well as detector absorption using…

Read more
02.09.2021

Con­grat­u­la­tions to Lu­cas Alonso

We congratulate Lucas Alonso who has successfully defended his bachelor thesis titled "Quantum detector tomography of an 8-bin time multiplexed detector".

Read more
  • …
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8

Mesoscopic Quantum Optics

Warburger Str. 100
33098 Paderborn
Germany

Quick links
  • Paderborn University
  • Faculty of Mechanical Engineering
  • Faculty of Computer Science, Electrical Engineering and Mathematics
  • Faculty of Business Administration and Economics
  • Faculty of Science
  • Faculty of Arts and Humanities
Social networks
Universität Paderborn

Warburger Str. 100
33098 Paderborn
Germany

Phone University

+49 5251 60-0
Legal notice
  • Imprint
  • Data privacy
  • Whistleblower system
Social networks