Grants — Principal Investigator / AMU Lead
QEC4QEA — Quantum Excellence Centre for Quantum-Enhanced Applications
AMU leads three application areas: QED simulation, quantum machine learning for error decoding, and post-quantum cryptography. The project provides access to PIAST-Q (the first EuroHPC quantum computer, located in Poznan) and 9 other European quantum systems.
Polish partners: AMU, PCSS, Centre for Theoretical Physics PAN.
Kernel Based Quantum Machine Learning in Optical Circuits
Development of quantum kernel methods for photonic-based classification algorithms. Our quantum kernels can be used for solving high-dimensional classification problems and could potentially be computed faster than their classical counterparts.
NCN Sonata: Nonlinear Properties of Low-Dimensional Quantum States
Direct measurement methods for nonlinear properties of quantum states and applications in quantum information processing. Full description below ↓
Grants — Investigator
NCN Maestro: Dissipative Quantum Engineering
Fundamental problems and implementations of dissipative quantum engineering.
DARIAH — HANOI
NCN OPUS
MNiSW Grant Promotorski
Research grant supporting the doctoral project on secure quantum teleportation and optimal quantum cloning.
POST-UP (Palacky University, Olomouc)
EU-funded postdoctoral fellowship at RCPTM, Joint Laboratory of Optics.
Co-authored Proposals
PIAST AI Factory
AI Factory project providing access to EuroHPC quantum and HPC infrastructure.
FENG Smart2
NCN Sonata: Nonlinear Properties of Low-Dimensional Quantum States — Details
Summary
Quantum entanglement is one of the most surprising phenomena predicted by quantum mechanics. Quantum particles that have previously interacted can instantly react to a change in the state of an entangled particle, even if it is extremely far away. Moreover, information encoded in a quantum system cannot be perfectly copied if it is previously unknown to us.
In our project, we focused on studying the properties of quantum states of light. We developed methods for measuring the quality of quantum states and investigated their application in new communication and computational technologies. As a result, we built sources of radiation emitting a specific number of photons and increased the efficiency of optical quantum logic gates by an order of magnitude.
One of the most important results of our work is the creation of optical quantum money and the investigation of the extent to which such a currency is resistant to counterfeiting. Our research results were widely discussed in both scientific literature and the media.
Publications
- K. Bartkiewicz, A. Cernoch, G. Chimczak, K. Lemr, A. Miranowicz, F. Nori, Experimental quantum forgery of quantum optical money, npj Quantum Inf. 3, s41534-017-0010-x (2017). DOI
- K. Lemr, K. Bartkiewicz, A. Cernoch, M. Dusek, J. Soubusta, Experimental implementation of optimal linear-optical controlled-unitary gates, Phys. Rev. Lett. 114, 153602 (2015). DOI
- K. Bartkiewicz, P. Horodecki, K. Lemr, A. Miranowicz, K. Zyczkowski, Method for universal detection of two-photon polarization entanglement, Phys. Rev. A 91, 032315 (2015). DOI
- K. Bartkiewicz, A. Cernoch, D. Javurek, K. Lemr, J. Soubusta, J. Svozilik, One-state vector formalism for the evolution of a quantum state through nested Mach-Zehnder interferometers, Phys. Rev. A 91, 012103 (2015). DOI
- K. Bartkiewicz, J. Beran, K. Lemr, M. Norek, A. Miranowicz, Quantifying entanglement of a two-qubit system via measurable and invariant moments of its partially transposed density matrix, Phys. Rev. A 91, 022323 (2015). DOI
- A. Miranowicz, K. Bartkiewicz, J. Perina Jr., M. Koashi, N. Imoto, F. Nori, Optimal two-qubit tomography based on local and global measurements, Phys. Rev. A 90, 062123 (2014). DOI
- A. Miranowicz, K. Bartkiewicz, N. Lambert, Y.-N. Chen, F. Nori, Increasing relative nonclassicality quantified by standard entanglement potentials by dissipation and unbalanced beam splitting, Phys. Rev. A 92, 062314 (2015). DOI
- A. Miranowicz, K. Bartkiewicz, A. Pathak, J. Perina Jr., Y.-N. Chen, F. Nori, Statistical mixtures of states can be more quantum than their superpositions, Phys. Rev. A 91, 042309 (2015). DOI
- K. Bartkiewicz, A. Cernoch, K. Lemr, A. Miranowicz, Priority Choice Experimental Two-Qubit Tomography, Sci. Rep. 6, 19610 (2016). DOI
- K. Bartkiewicz, A. Cernoch, D. Javurek, K. Lemr, J. Soubusta, J. Svozilik, Reply to "Comment on 'One-state vector formalism...'", Phys. Rev. A 93, 036104 (2016). DOI
- K. Bartkiewicz, A. Cernoch, K. Lemr, A. Miranowicz, F. Nori, Temporal steering and security of QKD with mutually unbiased bases against individual attacks, Phys. Rev. A 93, 062345 (2016). DOI
- K. Lemr, K. Bartkiewicz, A. Cernoch, Experimental measurement of collective nonlinear entanglement witness for two qubits, Phys. Rev. A 94, 052334 (2016). DOI
- M. Bula, K. Bartkiewicz, A. Cernoch, D. Javurek, K. Lemr, V. Michalek, J. Soubusta, Measuring evolution of a photon in an interferometer with spectrally resolved modes, Phys. Rev. A 94, 052106 (2016). DOI
- K. Bartkiewicz, A. Cernoch, K. Lemr, A. Miranowicz, F. Nori, Experimental temporal quantum steering, Sci. Rep. 6, 38076 (2016). DOI
- K. Bartkiewicz, G. Chimczak, K. Lemr, Direct method for measuring and witnessing quantum entanglement of arbitrary two-qubit states through Hong-Ou-Mandel interference, Phys. Rev. A 95, 022331 (2017). DOI
- K. Bartkiewicz, K. Lemr, A. Cernoch, A. Miranowicz, Bell nonlocality and fully entangled fraction measured in an entanglement-swapping device without quantum state tomography, Phys. Rev. A 95, 030102(R) (2017). DOI
- V. Travnicek, K. Bartkiewicz, A. Cernoch, K. Lemr, Experimental characterization of photon-number noise in Rarity-Tapster-Loudon-type interferometers, Phys. Rev. A 96, 023847 (2017). DOI