About: Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We consider multiqubit systems and relate quantitatively the problems of generating cluster states with high values of concurrence of assistance, and of generating states with maximal bipartite entanglement. We prove an upper bound for the concurrence of assistance. We consider dynamics of spin-1/2 systems that model qubits, with different couplings and possible presence of magnetic field, to investigate the appearance of the discussed entanglement properties. We find that states with maximal bipartite entanglement can be generated by an isotropic XY Hamiltonian, and their generation can be controlled by the initial state of one of the spins. The same Hamiltonian is capable of creating states with high concurrence of assistance from a suitably chosen initial state. We show that the production of graph states using the Ising Hamiltonian is controllable via a single-qubit rotation of one spin-1/2 subsystem in the initial multiqubit state. We consider multiqubit systems and relate quantitatively the problems of generating cluster states with high values of concurrence of assistance, and of generating states with maximal bipartite entanglement. We prove an upper bound for the concurrence of assistance. We consider dynamics of spin-1/2 systems that model qubits, with different couplings and possible presence of magnetic field, to investigate the appearance of the discussed entanglement properties. We find that states with maximal bipartite entanglement can be generated by an isotropic XY Hamiltonian, and their generation can be controlled by the initial state of one of the spins. The same Hamiltonian is capable of creating states with high concurrence of assistance from a suitably chosen initial state. We show that the production of graph states using the Ising Hamiltonian is controllable via a single-qubit rotation of one spin-1/2 subsystem in the initial multiqubit state. (en)
Title	Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems (en)
skos:prefLabel	Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems (en)
skos:notation	RIV/00216224:14330/05:00013054!RIV10-GA0-14330___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA201/04/1153), Z(MSM0021622419)
http://linked.open...iv/cisloPeriodika	No. 2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Bužek, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Fakulta informatiky
http://linked.open...dnocenehoVysledku	518212
http://linked.open...ai/riv/idVysledku	RIV/00216224:14330/05:00013054
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	quantum entanglement; spin systems (en)
http://linked.open.../riv/klicoveSlovo	quantum entanglement spin systems
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[184CA134A130]
http://linked.open...i/riv/nazevZdroje	Physical Review A
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Quantum resources and primitives
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	Vol. 72
http://linked.open...iv/tvurceVysledku	Bužek, Vladimír Rapčan, Peter Koniorczyk, Matyas
http://linked.open...ain/vavai/riv/wos	000231564200053
http://linked.open...n/vavai/riv/zamer	Highly Parallel and Distributed Computing Systems
issn	1050-2947
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	14330
is http://linked.open...avai/riv/vysledek of	Direct versus measurement-assisted bipartite entanglement in multiqubit systems and their dynamical generation in spin systems

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