8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Polish Academy of SciencesPL234 papers
- Institute of Molecular Physics of the Polish Academy of SciencesPL159 papers
- Centre National de la Recherche ScientifiqueFR113 papers
- University of MichiganUS94 papers
- RIKENJP89 papers
- European Southern ObservatoryCL83 papers
- Palacký University OlomoucCZ77 papers
- University of EdinburghGB74 papers
- Nicolaus Copernicus Astronomical CenterPL73 papers
- Royal ObservatoryGB73 papers
- University of WarsawPL72 papers
- Institute of PhysicsPL68 papers
15 papers · 2 filters
Trapping a particle of a quantum walk on the line
Antoni Wojcik, Tomasz Luczak, Pawel Kurzynski +3
We observe that changing a phase at a single point in a discrete quantum walk results in a rather surprising localization effect. For certain values of this phase change the possib…
Generation of discrete superpositions of coherent states in the anharmonic oscillator model
A. Miranowicz, R. Tanas, S. Kielich
The problem of generating discrete superpositions of coherent states in the process of light propagation through a nonlinear Kerr medium, which is modelled by the anharmonic oscill…
No-broadcasting of non-signalling boxes via operations which transform local boxes into local ones
P. Joshi, A. Grudka, K. Horodecki +3
We deal with families of probability distributions satisfying non-signalling condition, called non-signalling boxes and consider class of operations that transform local boxes into…
Schemes of transmission of classical information via quantum channels with many senders: discrete and continuous variables cases
L. Czekaj, J. K. Korbicz, R. W. Chhajlany +1
Superadditivity effects in the classical capacity of discrete multi-access channels (MACs) and continuous variable (CV) Gaussian MACs are analysed. New examples of the manifestatio…
Distillation of entanglement by projection on permutationally invariant subspaces
Mikołaj Czechlewski, Andrzej Grudka, Michał Horodecki +2
We consider distillation of entanglement from two qubit states which are mixtures of three mutually orthogonal states: two pure entangled states and one pure product state. We dist…
Particle addition and subtraction as a test of bosonic quality
Pawel Kurzynski, Ravishankar Ramanathan, Akihito Soeda +2
We propose a test to measure the bosonic quality of particles with respect to physical operations of single-particle addition and subtraction. We apply our test to investigate boso…
Directed percolation effects emerging from superadditivity of quantum networks
L. Czekaj, R. W. Chhajlany, P. Horodecki
Entanglement indcued non--additivity of classical communication capacity in networks consisting of quantum channels is considered. Communication lattices consisiting of butterfly-t…
Limit measures of inhomogeneous discrete-time quantum walks in one dimension
Norio Konno, Tomasz Luczak, Etsuo Segawa
We treat three types of measures of the quantum walk (QW) with the spatial perturbation at the origin, which was introduced by [1]: time averaged limit measure, weak limit measure,…
Photon-number entangled states generated in Kerr media with optical parametric pumping
Anna Kowalewska-Kudłaszyk, Wiesław Leoński, Jan Peřina
Two nonlinear Kerr oscillators mutually coupled by parametric pumping are studied as a source of states entangled in photon numbers. Temporal evolution of entanglement quantified b…
Cloning of arbitrary mirror-symmetric distributions on Bloch sphere: Optimality proof and proposal for practical photonic realization
Karol Bartkiewicz, Adam Miranowicz
We study state-dependent quantum cloning which can outperform universal cloning. This is possible by using some a priori information on a given quantum state to be cloned. Specific…
Discrete Time Quantum Walk Approach to State Transfer
Pawel Kurzynski, Antoni Wojcik
We show that a quantum state transfer, previously studied as a continuous time process in networks of interacting spins, can be achieved within the model of discrete time quantum w…
Criteria for two distinguishable fermions to behave like a boson
Ravishankar Ramanathan, Pawel Kurzynski, Tan Kok Chuan +2
We study the necessary conditions for bosons composed of two distinguishable fermions to exhibit bosonic-like behaviour. We base our analysis on tools of quantum information theory…
Two-photon dipole-dipole blockade
Khulud Almutairi, Ryszard Tanas, Zbigniew Ficek
We describe a mechanism for a controlled generation of a pure Bell state with correlated atoms that involve two or zero excitations. The mechanism inhibits transitions into singly…
Comment on "Information flow of quantum states interacting with closed timelike curves"
Waldemar Klobus, Andrzej Grudka, Antoni Wojcik
We show that recent results on the interaction of causality-respecting particles with particles on closed timelike curves derived in [Phys. Rev. A 82, 062330 (2010)] depend on ambi…
Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses
Monika Bartkowiak, Adam Miranowicz, Xiaoguang Wang +3
Analyses of phenomena exhibiting finite-time decay of quantum entanglement have recently attracted considerable attention. Such decay is often referred to as sudden vanishing (or s…