2.4k citations
- Institute for Quantum Optics and Quantum Information InnsbruckAT65 papers
- Austrian Academy of SciencesAT64 papers
- Imperial College LondonGB10 papers
- Hungarian Academy of SciencesHU8 papers
- Max Planck Institute of Quantum OpticsDE8 papers
- St Petersburg UniversityRU8 papers
- Institute for Solid State Physics and OpticsHU7 papers
- University of ViennaAT7 papers
- Heidelberg UniversityDE6 papers
- Durham UniversityGB4 papers
- ETH ZurichCH4 papers
- Institute of Photonic SciencesES4 papers
30 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…
Characterizing heralded single-photon sources with imperfect measurement devices
M. Razavi, I. Söllner, E. Bocquillon +3
Any characterization of a single-photon source is not complete without specifying its second-order degree of coherence, i.e., its function. An accurate measurement of suc…
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…