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6 papers · 2 filters
Quantum-mechanical description of optical beams
Iwo Bialynicki-Birula, Zofia Bialynicka-Birula
Quantum mechanics of photons is derived from the theory of representations of the Poincaré group developed by Wigner. This theory places helicity as the most fundamental property;…
Evolution of entanglement under an Ising-like Hamiltonian with particle losses
Konrad Szymański, Krzysztof Pawłowski
We present analytical compact solution for the density matrix and correlation functions of two collective-macroscopic spins evolving via Ising-like Hamiltonian in the presence of p…
Equivalence of qubit-environment entanglement and discord generation via pure dephasing interactions and the consequences thereof
Katarzyna Roszak, Łukasz Cywiński
We find that when a qubit initialized in a pure state experiences pure dephasing due to interaction with an environment, separable qubit-environment states generated during the evo…
Mutual Unbiasedness in Coarse-grained Continuous Variables
Daniel S. Tasca, Piero Sánchez, Stephen P. Walborn +1
The notion of mutual unbiasedness for coarse-grained measurements of quantum continuous variable systems is considered. It is shown that while the procedure of "standard" coarse gr…
Two bosonic quantum walkers in one-dimensional optical lattices
Dariusz Wiater, Tomasz Sowiński, Jakub Zakrzewski
Dynamical properties of two bosonic quantum walkers in a one-dimensional lattice are studied theoretically. Depending on the initial state, interactions, lattice tilting, and latti…
One-parameter Fisher-Rényi complexity: Notion and hydrogenic applications
Irene V. Toranzo, Pablo Sánchez-Moreno, Łukasz Rudnicki +1
In this work the one-parameter Fisher-Rényi measure of complexity for general -dimensional probability distributions is introduced and its main analytic properties are discussed…