200 citations
- Centre National de la Recherche ScientifiqueFR26 papers
- Laboratoire Paul PainlevéFR18 papers
- Institut d'électronique de microélectronique et de nanotechnologieFR8 papers
- Case Western Reserve UniversityUS6 papers
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- École Centrale de LilleFR4 papers
- Laboratoire de Physique des PlasmasFR4 papers
- Université Paris-SudFR4 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3 papers
- Hunan UniversityCN3 papers
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- Laboratoire de Mathématiques d'OrsayFR3 papers
6 papers · 1 filter
How often is a random quantum state k-entangled?
Stanislaw J. Szarek, Elisabeth Werner, Karol Zyczkowski
The set of trace preserving, positive maps acting on density matrices of size d forms a convex body. We investigate its nested subsets consisting of k-positive maps, where k=2,...,…
Atomic Dipole Traps with Amplified Spontaneous Emission: A Proposal
Jean-François Clément, Véronique Zehnlé, Jean Claude Garreau +1
We propose what we believe to be a novel type of optical source for ultra-cold atomic Far Off-Resonance optical-dipole Traps (FORTs). The source is based on an Erbium Amplified Spo…
Hastings' additivity counterexample via Dvoretzky's theorem
Guillaume Aubrun, Stanislaw Szarek, Elisabeth Werner
The goal of this note is to show that Hastings' counterexample to the additivity of minimal output von Neumann entropy can be readily deduced from a sharp version of Dvoretzky's th…
Bipartite states of low rank are almost surely entangled
Mary Beth Ruskai, Elisabeth M. Werner
We show that a bipartite state on a tensor product of two matrix algebras is almost surely entangled if its rank is not greater than that of one of its reduced density matrices.
Geometry of sets of quantum maps: a generic positive map acting on a high-dimensional system is not completely positive
Stanislaw J. Szarek, Elisabeth Werner, Karol Zyczkowski
We investigate the set a) of positive, trace preserving maps acting on density matrices of size N, and a sequence of its nested subsets: the sets of maps which are b) decomposable,…
Quantum teleportation of optical images with frequency conversion
Liubov V. Magdenko, Ivan V. Sokolov, Mikhail I. Kolobov
We describe a new version of continuous variables quantum holographic teleportation of optical images. Unlike the previously proposed scheme, it is based on the continuous variable…