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Q: Fachverband Quantenoptik und Photonik
Q 31: Quanteninformation (Konzepte und Methoden I)
Q 31.5: Talk
Thursday, March 13, 2008, 09:30–09:45, 1B
Evolution equation for quantum entanglement — •Markus Tiersch1,2, Thomas Konrad3, Fernando de Melo1,2, Christian Kasztelan4, Adriano Aragao5,2, and Andreas Buchleitner1,2 — 1Albert–Ludwigs–Universität Freiburg, Physikalisches Institut, Hermann–Herder–Str. 3, D–79104 Freiburg, Germany — 2Max–Planck–Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D–01187 Dresden, Germany — 3Quantum Research Group, School of Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa — 4Institut für Theoretische Physik C, RWTH Aachen, D–52056 Aachen, Germany — 5Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68.528, CEP 21945-970, Rio de Janeiro, RJ, Brazil
Quantum systems composed of two qubits consitute the starting point for the study of quantum entanglement. The evolution of entanglement when such a system is subject to open system dynamics will be examined in this talk. We will derive a simple factorization relation which describes the system’s final entanglement after one of the qubits has undergone an arbitrary physical process.