Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 21: Quantum information: Atoms and ions III

Q 21.2: Vortrag

Dienstag, 18. März 2014, 10:45–11:00, UDL HS3038

Generation of non-classically correlated separable states with correlated dephasing — •Edoardo Carnio, Manuel Gessner, and Andreas Buchleitner — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg

In trapped-ion experiments, a correlated dephasing effect is caused by fluctuations of the magnetic field. In our work we analyse the possibility to use this noise source for state engineering, and we use a geometric picture to explain the effect on the ions' spins. In particular, we investigate how correlated dephasing affects quantum correlations in separable states in terms of the correlation rank. Moreover, starting from a classically correlated state, we show that there is always an experimental configuration to generate separable states with maximal correlation rank.