Quantum Technologies Laboratory

Profile

Prof. Konrad Banaszek
email: k.banaszek@cent.uw.edu.pl
phone: +48 22 55 43750
room: 02.107
ORCID: 0000-0002-5389-6897
SCOPUS ID: 7004340787

The project will develop new concepts for optical communication systems building on recent advances in quantum information science and quantum optics. The central idea stems from reformulating the communication task as the identification problem for non-orthogonal quantum states describing individual inputs, rather than transmitting information in classical variables, such as the intensity or the phase, whose conventional measurements are bounded by standard quantum limits. This general approach, when implemented using the state-of-the-art methods for optical signal processing and characterization at the quantum level, opens up new ways to attain sub-shot-noise error rates as well as the superadditivity of accessible information through joint detection. The pursuit of these objectives will be complemented by the development of realistic models for optical communication channels and the general analysis of resources in communication protocols.

Leader

Prof. Konrad Banaszek is currently the director of the Centre of Quantum Optical Technologies funded by the International Research Agenda Programme operated by the Foundation for Polish Science and hosted by the Centre of New Technologies, University of Warsaw. After receiving a PhD degree from the Faculty of Physics, University of Warsaw in 2000 he held postdoctoral fellowships at the University of Rochester (USA) and the University of Oxford (United Kingdom) followed by faculty appointments at the Nicolaus Copernicus University in Torun, Poland and the University of Warsaw. He is an author or a co-author of over 100 scientific articles dealing with various aspects of quantum technologies. Over the last decade he coordinated three projects funded by the 7th Framework Programme of the European Union and he realized two TEAM projects supported by the Foundation for Polish Science. In addition to his academic appointment at the University of Warsaw he also serves as the scientific coordinator of the QuantERA funding initiative, which groups 32 grant agencies from 26 countries and is coordinated by National Science Centre Poland.

Team

Leader
Prof. Konrad Banaszek

Postdocs / employees
Michał Jachura
Marcin Jarzyna

PhD Students
Stanisław Kurdziałek
Karol Łukanowski
Antoni Mikos-Nuszkiewicz
Wojciech Zwoliński

Students
Mateusz Kucharczyk

Selected projects

Selected publications

• Mikos-Nuszkiewicz A., Paczos J., Banaszek K., Jarzyna M.
  Bayesian approach to coherent combination of single photon beams
  (2024) Optics Express, 32 (16), pp. 28769 – 28778
  DOI: 10.1364/OE.530127
• Jarzyna M., Kunz L., Zwolinski W., Jachura M., Banaszek K.
  Photon information efficiency limits in deep-space optical communications
  (2024) Optical Engineering, 63 (4), art. no. 041209
  DOI: 10.1117/1.OE.63.4.041209
• Krokosz W., Mazelanik M., Lipka M., Jarzyna M., Wasilewski W., Banaszek K., Parniak M.
  Unlocking Sub-Diffraction Spectral Resolution with Quantum-Enhanced Heterodyne Detection
  (2024) 16th Pacific Rim Conference on Lasers and Electro-Optics, CLEO-PR 2024
  DOI: 10.1109/CLEO-PR60912.2024.10676578
• Krokosz W., Mazelanik M., Lipka M., Jarzyna M., Wasilewski W., Banaszek K., Parniak M.
  Beating the spectroscopic Rayleigh limit via post-processed heterodyne detection
  (2024) Optics Letters, 49 (4), pp. 1001 – 1004
  DOI: 10.1364/OL.514659
• Banaszek K., Łukanowski K., Jachura M., Jarzyna M.
  Quantum Noise in Optical Communication Systems: Limitations and Opportunities
  (2023) IET Conference Proceedings, 2023 (34), pp. 349 – 352
  DOI: 10.1049/icp.2023.2077
• Kraśnicki W., Mazelanik M., Lipka M., Wasilewski W., Jarzyna M., Banaszek K., Parniak M.
  Spectral Superresolution via Heterodyne Sensing
  (2023) Frontiers in Optics: Proceedings Frontiers in Optics + Laser Science 2023, FiO, LS 2023
  DOI: 10.1364/FIO.2023.FW5D.5
• Jarzyna M., Jachura M., Banaszek K.
  Quantum Pulse Gate Attack on IM/DD Optical Key Distribution Exploiting Symbol Shape Distortion
  (2023) IEEE Communications Letters, 27 (7), pp. 1699 – 1703
  DOI: 10.1109/LCOMM.2023.3273305
• Notarnicola M.N., Jarzyna M., Olivares S., Banaszek K.
  Optimizing state-discrimination receivers for continuous-variable quantum key distribution over a wiretap channel
  (2023) New Journal of Physics, 25 (10), art. no. 103014
  DOI: 10.1088/1367-2630/acfd50
• Lukanowski K., Banaszek K., Jarzyna M.
  Quantum Limits on the Capacity of Multispan Links With Phase-Sensitive Amplification
  (2023) Journal of Lightwave Technology, 41 (15), pp. 5017 – 5025
  DOI: 10.1109/JLT.2023.3256585
• Paczos J., Banaszek K., Jarzyna M.
  Coherent combination of low-power optical signals: A case study
  (2023) 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
  DOI: 10.1109/CLEO/EUROPE-EQEC57999.2023.10232689

Contact

Prof. Konrad Banaszek
email: k.banaszek@cent.uw.edu.pl
phone: +48 22 55 43750
room: 02.107