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- Universität InnsbruckAT53 papers
- Institute for Quantum Optics and Quantum Information InnsbruckAT52 papers
- University of ViennaAT25 papers
- The University of TokyoJP12 papers
- Polish Academy of SciencesPL11 papers
- Seoul National UniversityKR11 papers
- University of LjubljanaSI11 papers
- University of Nova GoricaSI11 papers
- Institute of High Energy PhysicsCN10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Korea UniversityKR9 papers
- Max Planck Institute of Quantum OpticsDE9 papers
23 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…
Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
Alexey V. Gorshkov, Ana Maria Rey, Andrew J. Daley +4
We propose and analyze a novel approach to quantum information processing, in which multiple qubits can be encoded and manipulated using electronic and nuclear degrees of freedom a…
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…
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…
Deterministic entanglement of ions in thermal states of motion
G. Kirchmair, J. Benhelm, F. Zähringer +3
We give a detailed description of the implementation of a Molmer-Sorensen gate entangling two Ca+ ions using a bichromatic laser beam near-resonant with a quadrupole transition. By…