Highly Entangled Ground States in Tripartite Qubit Systems

Simple item page
dc.creatorRöthlisberger, Beat
dc.creatorLehmann, Jörg
dc.creatorSaraga, D. S.
dc.creatorTraber, Philipp
dc.creatorLoss, Daniel
dc.date2007-05-11
dc.date2008-02-07
dc.date.accessioned2026-07-07T09:27:14Z
dc.date.available2026-07-07T09:27:14Z
dc.descriptionWe investigate the creation of highly entangled ground states in a system of three exchange-coupled qubits arranged in a ring geometry. Suitable magnetic field configurations yielding approximate GHZ and exact W ground states are identified. The entanglement in the system is studied at finite temperature in terms of the mixed-state tangle tau. By adapting a steepest-descent optimization algorithm we demonstrate that tau can be evaluated efficiently and with high precision. We identify the parameter regime for which the equilibrium entanglement of the tripartite system reaches its maximum.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0705.1710
dc.identifierhttp://arxiv.org/abs/0705.1710
dc.identifierPhys. Rev. Lett. 100, 100502 (2008).
dc.identifierdoi:10.1103/PhysRevLett.100.100502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157024
dc.subjectQuantum Physics
dc.subjectMesoscale and Nanoscale Physics
dc.titleHighly Entangled Ground States in Tripartite Qubit Systems
dc.typetext

Files

Collections

arXiv