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  • On the symmetry of the seminal Horodecki state 
    Chruściński, Dariusz; Kossakowski, Andrzej (2010-09-22)
    It is shown that the seminal Horodecki 2-qutrit state belongs to the class of states displaying symmetry governed by a commutative subgroup of the unitary group U(3). Taking a conjugate subgroup one obtains another classes ...
  • Optical Coherence Tomography (OCT) for examination of artworks 
    Iwanicka, Magdalena; Sylwestrzak, Marcin; Targowski, Piotr (Springer Nature, 2018)
    Optical coherence tomography is a fast, non-invasive technique of structural analysis utilising near-infrared radiation. Examples of using OCT, for obtaining cross-sectional images of objects of craftsmanship and an easel ...
  • Optimal entanglement witnesses for two qutrits 
    Chruściński, Dariusz; Sarbicki, Gniewomir (2011-08-02)
    We provide a proof that entanglement witnesses considered recently in [D. Chru\'sci\'nski, F.A. Wudarski, arXiv:1105.4821] are optimal.
  • Optimal entanglement witnesses from generalized reduction and Robertson maps 
    Chruściński, Dariusz; Pytel, Justyna (2011-03-02)
    We provide a generalization of the reduction and Robertson positive maps in matrix algebras. They give rise to a new class of optimal entanglement witnesses. Their structural physical approximation is analyzed. As a byproduct ...
  • OSL dating of modern fluvial sediments in the lower Vistula River: testing zeroing assumption 
    Przegiętka, Krzysztof; Molewski, Paweł; Juśkiewicz, Włodzimierz; Palczewski, Piotr; Chabowski, Marek (2016-06-06)
    In this study recent sediments of the lower Vistula River were investigated to determine the relationship between the structure and texture specific features and the possibility of their zeroing. The samples of recent ...
  • Parameterizing density matrices for composite quantum systems 
    Bruening, Erwin; Chruściński, Dariusz; Petruccione, Francesco (2008-10-14)
    A parametrization of density operators for bipartite quantum systems is proposed. It is based on the particular parametrization of the unitary group found recently by Jarlskog. It is expected that this parametrization will ...
  • Particle module of Piernik MHD code 
    Drążkowska, Joanna; Hanasz, Michał; Kowalik, Kacper (2010-08-30)
    Piernik is a multi-fluid grid magnetohydrodynamic (MHD) code based on the Relaxing Total Variation Diminishing (RTVD) conservative scheme. The original code has been extended by addition of dust described within the particle ...
  • Phase-space approach to Berry's phases 
    Chruściński, Dariusz (2004-06-04)
    We propose a new formula for the adiabatic Berry phase which is based on phase-space formulation of quantum mechanics. This approach sheds a new light into the correspondence between classical and quantum adiabatic phases ...
  • Photoluminescence of ZnBeMnSe solid solutions 
    Strzałkowski, Karol; Firszt, Franciszek; Marasek, Agnieszka (Elsevier, 2017)
    In this paper optical properties of Zn1-x-yBexMnySe mixed semiconductors were studied as a function of both, temperature and excitation power. The crystals under investigation were grown by the high-pressure, high-temperature ...
  • PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (I) 
    Hanasz, Michał; Kowalik, Kacper; Wóltański, Dominik; Pawłaszek, Rafał (2008-12-11)
    We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme. The original scheme has been extended by an addition of dynamically independent, but interacting fluids: dust and a diffusive ...
  • PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (II) 
    Hanasz, Michał; Kowalik, Kacper; Wóltański, Dominik; Pawłaszek, Rafał; Kornet, Kacper (2008-12-15)
    We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin and Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003)) has been extended by an addition of ...
  • PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (III) 
    Hanasz, Michał; Kowalik, Kacper; Wóltański, Dominik; Pawłaszek, Rafał (2008-12-28)
    We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin & Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003)) has been extended by an addition of ...
  • PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (IV) 
    Hanasz, Michał; Kowalik, Kacper; Wóltański, Dominik; Pawłaszek, Rafał (2009-01-02)
    We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin & Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003)) has been extended by an addition of ...
  • Plasmonic nanostructures for light trapping in thin-film solar cells 
    Morawiec, Seweryn; Mendes, Manuel J.; Priolo, Francesco; Crupi, Isodiana (Elsevier Ltd., 2019)
    The optical properties of localized surface plasmon resonances (LSPR) sustained by self-assembled silver nanoparticles are of great interest for enhancing light trapping in thin film photovoltaics. First, we report on a ...
  • Plasmonic nanostructures for light trapping in thin-film solar cells 
    Morawiec, Seweryn; Mendes, Manuel J.; Priolo, Francesco; Crupi, Isodiana (2020-10-01)
    The optical properties of localized surface plasmon resonances (LSPR) sustained by self-assembled silver nanoparticles are of great interest for enhancing light trapping in thin film photovoltaics. First, we report on a ...
  • Positioning a mobile robot in a closed area with a map of markers 
    Sokolov, Oleksandr; Mreła, Aleksandra; Józefowicz, Mateusz; Rydel, Krzysztof; Meszyński, Sebastian (2019-03-30)
    The article presents issues related to the positioning of mobile robots in a closed area. The method of positioning using photogrammetry methods based on the analysis of specially created unique square-shaped markers is ...
  • Praktyczna analiza sieci komputerowych z wykorzystaniem programu Wireshark 
    Piwiński, Mariusz (Wydział Matematyki i Informatyki Uniwersytetu Mikołaja Kopernika w Toruniu, Polskie Towarzystwo Informatyczne, 2008)
    Życie w społeczeństwie informatycznym skutkuje wszechobecnością komputerów. Stały się one niezbędnym narzędziem wykorzystywanym w codziennej pracy zawodowej oraz w życiu prywatnym. Szybki rozwój technologiczny sprawił, że ...
  • PSO based feedrate optimization with contour error constraints for NURBS toolpaths 
    Erwiński, Krystian; Paprocki, Marcin; Wawrzak, Andrzej; Grzesiak, Lech M. (2016-11-12)
    Generation of a time-optimal feedrate profile for CNC machines has received significant attention in recent years. Most methods focus on achieving maximum allowable feedrate with constrained axial acceleration and jerk ...
  • Quantum damped oscillator II: Bateman's Hamiltonian vs. 2D Parabolic Potential Barrier 
    Chruściński, Dariusz (2005-06-11)
    We show that quantum Bateman's system which arises in the quantization of a damped harmonic oscillator is equivalent to a quantum problem with 2D parabolic potential barrier known also as 2D inverted isotropic oscillator. ...
  • Quantum damped oscillator I: dissipation and resonances 
    Chruściński, Dariusz; Jurkowski, Jacek (2005-06-01)
    Quantization of a damped harmonic oscillator leads to so called Bateman's dual system. The corresponding Bateman's Hamiltonian, being a self-adjoint operator, displays the discrete family of complex eigenvalues. We show ...