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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…
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…
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…