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
14 papers · 2 filters
A comparative study of relative entropy of entanglement, concurrence and negativity
Adam Miranowicz, Andrzej Grudka
The problem of ordering of two-qubit states imposed by relative entropy of entanglement (E) in comparison to concurrence (C) and negativity (N) is studied. Analytical examples of s…
Efficient generation of distant atom entanglement
Grzegorz Chimczak
We show how the entanglement of two atoms, trapped in distant separate cavities, can be generated with arbitrarily high probability of success. The scheme proposed employs sudden e…
Comparison of the relative entropy of entanglement and negativity
Adam Miranowicz, Satoshi Ishizaka, Bohdan Horst +1
It is well known that for two qubits the upper bounds of the relative entropy of entanglement (REE) for a given concurrence as well as the negativity for a given concurrence are re…
Quantum noise and mixedness of a pumped dissipative non-linear oscillator
Jiri Bajer, Adam Miranowicz, Mateusz Andrzejewski
Evolutions of quantum noise, characterized by quadrature squeezing parameter and Fano factor, and of mixedness, quantified by quantum von Neumann and linear entropies, of a pumped…
Kerr nonlinear coupler and entanglement
Wieslaw Leonski, Adam Miranowicz
We discuss a model comprising two coupled nonlinear oscillators (Kerr-like nonlinear coupler) with one of them pumped by an external coherent excitation. Applying the method of non…
An iterative method for extreme optics of two-level systems
R. Parzynski, M. Sobczak, A. Plucinska
We formulate the problem of a two-level system in a linearly polarized laser field in terms of a nonlinear Riccati-type differential equation and solve the equation analytically in…
Kraus representation of damped harmonic oscillator and its application
Yu-xi Liu, Sahin Kaya Ozdemir, Adam Miranowicz +1
By definition, the Kraus representation of a harmonic oscillator suffering from the environment effect, modeled as the amplitude damping or the phase damping, is directly given by…
Teleportation with insurance of an entangled atomic state via cavity decay
Grzegorz Chimczak, Ryszard Tanas, Adam Miranowicz
We propose a scheme to teleport an entangled state of two -type three-level atoms via photons. The teleportation protocol involves the local redundant encoding protecting the in…
Comment on "Quantum dense key distribution"
Antoni Wojcik
In this Comment we question the security of recently proposed by Degiovanni et al. [Phys. Rev. A 69 (2004) 032310] scheme of quantum dense key distribution.
Ordering two-qubit states with concurrence and negativity
Adam Miranowicz, Andrzej Grudka
We study the ordering of two-qubit states with respect to the degree of bipartite entanglement using the Wootters concurrence -- a measure of the entanglement of formation, and the…
Decoherence of two maximally entangled qubits in a lossy nonlinear cavity
Adam Miranowicz
Decoherence effect on quantum entanglement of two optical qubits in a lossy cavity interacting with a nonlinear medium (Kerr nonlinearity) is analyzed. The qubits are assumed to be…
Violation of Bell inequality and entanglement of decaying Werner states
Adam Miranowicz
Bell-inequality violation and entanglement, measured by Wootters' concurrence and negativity, of two qubits initially in Werner or Werner-like states coupled to thermal reservoirs…
Erasure versus teleportation scheme of optical CNOT gate
Antoni Wojcik, Andrzej Grudka
We clarify the connections between the erasure scheme of probabilistic CNOT gate implementation recently proposed by Pittman, Jacobs and Franson [Phys. Rev. A 64, 062311 (2001)] an…
Exciton entanglement in two coupled semiconductor microcrystallites
Yu-xi Liu, Sahin K. Ozdemir, Adam Miranowicz +2
Entanglement of the excitonic states in the system of two coupled semiconductor microcrystallites, whose sizes are much larger than the Bohr radius of exciton in bulk semiconductor…