Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Frydryszak, Andrzej M."'
Publikováno v:
Quantum Inf Process (2019) 18: 84
We derive an explicit expressions for geometric description of state manifold obtained from evolution governed by a three parameter family of Hamiltonians covering most cases related to real interacting two-qubit systems. We discuss types of evolutio
Externí odkaz:
http://arxiv.org/abs/1809.00731
Autor:
Frydryszak, Andrzej M.
We juxtapose two approaches to the representations of the super-Heisenberg group. Physical one, sometimes called concrete approach, based on the super-wave functions depending on the anti-commuting variables, yielding the harmonic superanalysis and r
Externí odkaz:
http://arxiv.org/abs/1409.8410
We derive an explicit expression for geometric measure of entanglement for spin and other quantum system. A relation of entanglement in pure state with the mean value of spin is given, thus, at the experimental level the local measurement of spin may
Externí odkaz:
http://arxiv.org/abs/1211.6472
Autor:
Frydryszak, Andrzej M.
We analyze recently proposed formalisms which use nilpotent variables to describe and/or generalize qubits and notion of entanglement. There are two types of them distinguished by the commutativity and or anti-commutativity of basics variables. While
Externí odkaz:
http://arxiv.org/abs/1210.0922
Autor:
Frydryszak, Andrzej M.
Entanglement of four qubit pure states defined by the $\eta$-trigonometric functions is studied. We analyze the behavior of two recently proposed symmetric entanglement monotones on the chosen $n=4$ qubit states .
Comment: 7 pages, no figures
Comment: 7 pages, no figures
Externí odkaz:
http://arxiv.org/abs/0902.3553
Autor:
Frydryszak, Andrzej M.
We address the question of description of qubit system in a formalism based on the nilpotent commuting variables. In this formalism qubits exhibit properties of composite objects being subject of the Pauli exclusion principle, but otherwise behaving
Externí odkaz:
http://arxiv.org/abs/0810.3016
Autor:
Frydryszak, Andrzej M
Publikováno v:
Int.J.Mod.Phys.A22:2513-2534,2007
The formalism of nilpotent mechanics is introduced in the Lagrangian and Hamiltonian form. Systems are described using nilpotent, commuting coordinates $\eta$. Necessary geometrical notions and elements of generalized differential $\eta$-calculus are
Externí odkaz:
http://arxiv.org/abs/hep-th/0609072
Autor:
Frydryszak, Andrzej M.
We introduce specific type of hyperbolic spaces. It is not a general linear covariant object, but of use in constructing nilpotent systems. In the present work necessary definitions and relevant properties of configuration and phase spaces are indica
Externí odkaz:
http://arxiv.org/abs/math-ph/0609029
Starting from the full group of symmetries of a system we select a discrete subset of transformations which allows to introduce the Clifford algebra of operators generating new supercharges of extended supersymmetry. The system defined by the Pauli H
Externí odkaz:
http://arxiv.org/abs/quant-ph/0110049
