83 citations · 121 across the 6 of their papers we have counts for
6 papers
The exact convex roof for GHZ-W mixtures for three qubits and beyond
Andreas Osterloh
I present an exact solution for the convex roof of the square root of the threetangle for rank two density matrices and for all states within the Bloch sphere. Aside the formerly k…
Threetangle in the XY-model class with a non-integrable field background
Jörg Neveling, Andreas Osterloh
The square root of the threetangle is calculated for the transverse XY-model with an integrability-breaking in-plane field component. To be in a regime of quasi-solvability of the…
Estimating multipartite entanglement measures
A. Osterloh, P. Hyllus
We investigate the lower bound obtained from experimental data of a quantum state , as proposed independently by Gühne et al. and Eisert et al. for mixed states of three qubits.…
Entanglement and its facets in condensed matter systems
A. Osterloh
This thesis poses a selection of recent research of the author in a common context. It starts with a selected review on research concerning the role entanglement might play at quan…
Classification of qubit entanglement: SL(2,C) versus SU(2) invariance
A. Osterloh
The role of SU(2) invariants for the classification of multiparty entanglement is discussed and exemplified for the Kempe invariant I_5 of pure three-qubit states. It is found to b…
Three-tangle for mixtures of generalized GHZ and generalized W states
Christopher Eltschka, Andreas Osterloh, Jens Siewert +1
We give a complete solution for the three-tangle of mixed three-qubit states composed of a generalized GHZ state, a|000>+b|111>, and a generalized W state, c|001>+d|010>+f|100>. Us…