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- Institute for Quantum Optics and Quantum Information InnsbruckAT973 papers
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56 papers · 2 filters
Collective Rydberg excitations of an atomic gas confined in a ring lattice
B. Olmos, R. González-Férez, I. Lesanovsky
We study the excitation dynamics of Rydberg atoms in a one-dimensional lattice with periodic boundary conditions where the atomic Rydberg states are resonantly excited from the ele…
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…
A classical explanation of quantization
Gerhard Groessing, Johannes Mesa Pascasio, Herbert Schwabl
In the context of our recently developed emergent quantum mechanics, and, in particular, based on an assumed sub-quantum thermodynamics, the necessity of energy quantization as ori…
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…
Logical independence and quantum randomness
Tomasz Paterek, Johannes Kofler, Robert Prevedel +4
We propose a link between logical independence and quantum physics. We demonstrate that quantum systems in the eigenstates of Pauli group operators are capable of encoding mathemat…