Quantum Information and Inference (QI2) Laboratory

Profile

Jan Kołodyński, PhD
e-mail: jan.kolodynski@cent.uw.edu.pl
room: 02.54
ORCID: 0000-0001-8211-0016
SCOPUS ID: 36677316700

Quantum information science is a research area that investigates quantum systems as natural and fundamental building-blocks for transmitting, storing and processing information. It explores how to exploit quantum properties of light and matter in order to perform tasks of communication, computation and sensing in the most efficient and, sometimes, also completely secure fashion.

However, as quantum mechanics is probabilistic by nature and, moreover, quantum systems are very fragile—being vulnerable to any external noise—advanced statistical inference and signal processing techniques turn out to be essential in order to exploit the full potential of any real-life quantum device. Quantum inference theory studies how to tailor such data inference tools so that quantum properties of systems can not only be accounted for but also extensively benefited from.

Within QI2-lab we primarily work on quantum metrology and sensing tasks. We develop the fundamental theory of quantum estimation protocols in order to focus on their optical implementations, with a particular interest in quantum sensors based on atomic-spin ensembles. We also seek novel practical solutions in quantum information tasks of cryptography and communication, while exploring the applicability of their state-of-art photonic implementations. Last but not least, we work on quantum software—our aim is to create an open-source library that will encompass various “quantum-tailored” data inference tools (such as filtering, compressive sampling or machine learning) so that they can be directly implemented in quantum control and sensing experiments that involve continuous-time measurements.

Leader

Research experience

2018-: Junior Group Leader, Centre for Quantum Optical Technologies (QOT), Warsaw, Poland.

2014-2018: Postdoctoral Researcher, Institute of Photonic Sciences (ICFO), Barcelona, Spain.

2010-2014: Research Assistant, Faculty of Physics, University of Warsaw, Poland.

Education

2010-2014:  PhD in Physics (thesis), Faculty of Physics, University of Warsaw, Poland.

2008-2009:  MA Theor. Physics (CASM – Part III Maths), DAMTP, Cambridge, UK.

2007-2008:  Part II General in Computer Science, Comp. Labs, Cambridge, UK.

2004-2007:  BA in Natural Sciences (Physics), St John’s College, University of Cambridge, UK.

Selected prizes and scholarships

2018-2020:  HOMING programme laureate, Foundation for Polish Science, Poland.

2015-2017:  Maria Skłodowska-Curie European Fellowship, ICFO, Spain.

2014-2015:  START Scholarship, Foundation for Polish Science, Poland.

2004-2008:  Cambridge European Trust Scholarship, Cambridge, UK.

Team

Leader
Jan Kołodyński, PhD

Postdocs / employee
Lewis Clark, PhD

PhD Students
Julia Amoros-Binefa, MSC
Klaudia Dilcher, MSC
Marcin Koźbiał, MSC

Selected projects

Selected publications

• Koźbiał M., Elson L., Rushton L.M., Akbar A., Meraki A., Jensen K., Kołodyński J.
  Spin noise spectroscopy of an alignment-based atomic magnetometer
  (2024) Physical Review A, 110 (1), art. no. 013125
  DOI: 10.1103/PhysRevA.110.013125
• Meraki A., Elson L., Ho N., Akbar A., Koźbiał M., Kołodyński J., Jensen K.
  Zero-field optical magnetometer based on spin alignment
  (2023) Physical Review A, 108 (6), art. no. 062610
  DOI: 10.1103/PhysRevA.108.062610
• Naikoo J., Chhajlany R.W., Kołodyński J.
  Multiparameter Estimation Perspective on Non-Hermitian Singularity-Enhanced Sensing
  (2023) Physical Review Letters, 131 (22), art. no. 220801
  DOI: 10.1103/PhysRevLett.131.220801
•  Jørgensen, M. R.,Kołodyński, J., Mehboudi, M., Perarnau-Llobet, M., and Brask, J.B.
  Bayesian quantum thermometry based on thermodynamic lenght
  (2022) Phys. Rev. A 105, 042601
  DOI: 10.1103/PhysRevA.105.042601
• Mehboudi, M., Jørgensen, M.R., Seah, S., Brask, J.R., Kołodyński, J., and Perarnau-Llobet, M.
  Fundamental Limits in Bayesian Thermometry and Attainability via Adaptive Strategies
  (2022) Phys. Rev. Lett. 128, 130502
  DOI: 10.1103/PhysRevLett.128.130502
• Miller, M., Wu, K.D., Scalici1, M., Kołodyński1, K., Xiang, G.Y., Li, C.F., Guo, G.C., Streltsov, A.
  Optimally preserving quantum correlations and coherence with eternally non-Markovian dynamics
  (2022) New J. Phys. 24 053022
  DOI: 10.1088/1367-2630/ac6820
• Clark L.A., Markowicz B., Kołodyński J.
  Exploiting non-linear effects in optomechanical sensors with continuous photon-counting
  (2022) Quantum, 6, art. no. 812
  DOI: 10.22331/Q-2022-09-20-812
• Łukanowski K., Farkas M., Balanzó-Juandó M., Acín A., Kołodyński J.
  Upper Bounds on Key Rates in Device-Independent Quantum Key Distribution Based on Convex-Combination Attacks
  (2022) Optics InfoBase Conference Papers, art. no. QTu4C.1
• Amorós-Binefa, J., Kołodyński, J.
  Noisy atomic magnetometry in real time
  (2021) 1New Journal of Physics, Vol. 23, 123030
  DOI: 10.1088/1367-2630/ac3b71

Contact

Jan Kołodyński, PhD
e-mail: jan.kolodynski@cent.uw.edu.pl
room: 02.54