200 citations · 1.2k across the 29 of their papers we have counts for
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A heat bath can generate all classes of three-qubit entanglement
Christopher Eltschka, Daniel Braun, Jens Siewert
It is common knowledge that coupling to a heat bath, in general, tends to reduce the entanglement in a quantum system. In recent years, increasing interest has been devoted to the…
Practical method to obtain a lower bound to the three-tangle
Christopher Eltschka, Jens Siewert
The quantitative assessment of the entanglement in multipartite quantum states is, apart from its fundamental importance, a practical problem. Recently there has been significant p…
A quantitative witness for Greenberger-Horne-Zeilinger entanglement
Christopher Eltschka, Jens Siewert
Along with the vast progress in experimental quantum technologies there is an increasing demand for the quantification of entanglement between three or more quantum systems. Theory…
Negativity as a counter of entangled dimensions
Christopher Eltschka, Jens Siewert
Among all entanglement measures negativity arguably is the best known and most popular tool to quantify bipartite quantum correlations. It is easily computed for arbitrary states o…
Entanglement of three-qubit Greenberger-Horne-Zeilinger-symmetric states
Christopher Eltschka, Jens Siewert
The first characterization of mixed-state entanglement was achieved for two-qubit states in Werner's seminal work [Phys. Rev. A 40, 4277 (1989)]. A physically important extension o…