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- Institute for Quantum Optics and Quantum Information InnsbruckAT64 papers
- Universität InnsbruckAT64 papers
- University of ViennaAT28 papers
- The University of TokyoJP13 papers
- Institute of High Energy PhysicsCN12 papers
- Polish Academy of SciencesPL12 papers
- University of LjubljanaSI12 papers
- University of Nova GoricaSI12 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Seoul National UniversityKR11 papers
- University of Science and Technology of ChinaCN10 papers
- Korea UniversityKR9 papers
12 papers · 1 filter
Entanglement-assisted Orientation in Space
Caslav Brukner, Nikola Paunkovic, Terry Rudolph +1
We demonstrate that quantum entanglement can help separated individuals in making decisions if their goal is to find each other in the absence of any communication between them. We…
Tangential Touch between Free and Fixed Boundaries in a Problem from Superconductivity
Norayr Matevosyan
In this paper we study regularity properties of the free boundary problem from superconductivity close to a fixed boundary. If the origin is a free boundary point, then we show tha…
Experimental Analysis of a 4-Qubit Cluster State
Nikolai Kiesel, Christian Schmid, Ulrich Weber +4
Linear optics quantum logic operations enabled the observation of a four-photon cluster state. We prove genuine four-partite entanglement and study its persistency, demonstrating r…
Instantaneous Bethe-Salpeter Equation with Exact Propagators
Wolfgang Lucha, F. F. Schoberl
Consequent application of the instantaneous approximation to both the interaction and all propagators of the bound-state constituents allows us to forge, within the framework of th…
The parametric degree of a rational surface
Josef Schicho
The parametric degree of a rational surface is the degree of the polynomials in the smallest possible proper parametrization. An example shows that the parametric degree is not a g…
Entanglement between Collective Operators in a Linear Harmonic Chain
Johannes Kofler, Vlatko Vedral, Myungshik S. Kim +1
We investigate entanglement between collective operators of two blocks of oscillators in an infinite linear harmonic chain. These operators are defined as averages over local opera…