2.4k citations
- Universität InnsbruckAT65 papers
- Austrian Academy of SciencesAT64 papers
- University of ViennaAT17 papers
- Max Planck Institute of Quantum OpticsDE10 papers
- Leibniz University HannoverDE5 papers
- Ludwig-Maximilians-Universität MünchenDE5 papers
- Hungarian Academy of SciencesHU4 papers
- IkerbasqueES4 papers
- Imperial College LondonGB4 papers
- Institute for Solid State Physics and OpticsHU4 papers
- University of LeedsGB4 papers
- University of the Basque CountryES4 papers
21 papers · 2 filters
Entanglement and permutational symmetry
Geza Toth, Otfried Gühne
We study the separability of permutationally symmetric quantum states. We show that for bipartite symmetric systems most of the relevant entanglement criteria coincide. However, we…
Classical spin systems and the quantum stabilizer formalism: general mappings and applications
R. Hübener, M. Van den Nest, W. Dür +1
We present general mappings between classical spin systems and quantum physics. More precisely, we show how to express partition functions and correlation functions of arbitrary cl…
High fidelity entanglement of 43Ca+ hyperfine clock states
G. Kirchmair, J. Benhelm, F. Zähringer +3
In an experiment using the odd calcium isotope 43Ca+ we combine the merits of a high fidelity entangling operation on an optical transition (optical qubit) with the long coherence…
Entanglement detection
Otfried Gühne, Geza Toth
How can one prove that a given state is entangled? In this paper we review different methods that have been proposed for entanglement detection. We first explain the basic elements…
Theory of Cross Phase Modulation for the Vibrational Modes of Trapped Ions
X. Rebecca Nie, Christian F. Roos, Daniel F. V. James
We analyze nonlinear coupling between individual vibrational quanta for trapped ions. The nonlinear Coulomb interaction causes a Kerr-type Hamiltonian, for which we derive an analy…
Positive phase space transformation incompatible with classical physics
Wonmin Son, Johannes Kofler, M. S. Kim +2
Bell conjectured that a positive Wigner function does not allow violation of the inequalities imposed by local hidden variable theories. A requirement for this conjecture is "when…