TY - JOUR AU - Zacher, Denise AU - Liu, Jianing AU - Huber, Klaus AU - Fischer, Roland A. ID - 41998 IS - 9 JF - Chemical Communications KW - Materials Chemistry KW - Metals and Alloys KW - Surfaces KW - Coatings and Films KW - General Chemistry KW - Ceramics and Composites KW - Electronic KW - Optical and Magnetic Materials KW - Catalysis SN - 1359-7345 TI - Nanocrystals of [Cu3(btc)2] (HKUST-1): a combined time-resolved light scattering and scanning electron microscopy study ER - TY - JOUR AU - Lages, Sebastian AU - Lindner, Peter AU - Sinha, Prashant AU - Kiriy, Anton AU - Stamm, Manfred AU - Huber, Klaus ID - 41996 IS - 12 JF - Macromolecules KW - Materials Chemistry KW - Inorganic Chemistry KW - Polymers and Plastics KW - Organic Chemistry SN - 0024-9297 TI - Formation of Ca2+-Induced Intermediate Necklace Structures of Polyacrylate Chains VL - 42 ER - TY - JOUR AB - Given a bipartite quantum state rho with subsystems A and B of arbitrary dimensions, we study the entanglement detecting capabilities of locally noneffective, or cyclic, unitary operations [L. B. Fu, Europhys. Lett., vol. 75, pp. 1-7, 2006]. Local cyclic unitaries have the special property that they leave their target subsystem invariant. We investigate the distance between rho and the global state after local application of such unitaries as a possible indicator of entanglement. To this end, we derive and discuss closed formulae for the maximal such distance achievable for three cases of interest: (pseudo)pure quantum states, Werner states, and two-qubit states. What makes this criterion interesting, as we show here, is that it surprisingly displays behavior similar to recent anomalies observed for non-locality measures in higher dimensions, as well as demonstrates an equivalence to the CHSH inequality for certain classes of two-qubit states. Yet, despite these similarities, the criterion is not itself a non-locality measure. We also consider entanglement detection in bound entangled states. AU - Gharibian, Sevag AU - Kampermann, Hermann AU - Bru{\ss}, Dagmar ID - 8180 IS - 11 JF - Quantum Information & Computation TI - On global effects caused by locally noneffective unitary operations VL - 9 ER - TY - JOUR AB - We investigate signatures of non-classicality in quantum states, in particular, those involved in the DQC1 model of mixed-state quantum computation [Phys. Rev. Lett. 81, 5672 (1998)]. To do so, we consider two known non-classicality criteria. The first quantifies disturbance of a quantum state under locally noneffective unitary operations (LNU), which are local unitaries acting invariantly on a subsystem. The second quantifies measurement induced disturbance (MID) in the eigenbasis of the reduced density matrices. We study the role of both figures of non-classicality in the exponential speedup of the DQC1 model and compare them vis-a-vis the interpretation provided in terms of quantum discord. In particular, we prove that a non-zero quantum discord implies a non-zero shift under LNUs. We also use the MID measure to study the locking of classical correlations [Phys. Rev. Lett. 92, 067902 (2004)] using two mutually unbiased bases (MUB). We find the MID measure to exactly correspond to the number of locked bits of correlation. For three or more MUBs, it predicts the possibility of superior locking effects. AU - Datta, Animesh AU - Gharibian, Sevag ID - 8181 IS - 4 JF - Physical Review A SN - 1050-2947 TI - Signatures of nonclassicality in mixed-state quantum computation VL - 79 ER - TY - JOUR AB - We prove that van Hoeij’s original algorithm to factor univariate polynomials over the rationals runs in polynomial time, as well as natural variants. In particular, our approach also yields polynomial time complexity results for bivariate polynomials over a finite field. AU - Belabas, Karim AU - van Hoeij, Mark AU - Klüners, Jürgen AU - Steel, Allan ID - 34889 IS - 1 JF - Journal de Théorie des Nombres de Bordeaux KW - Algebra and Number Theory SN - 1246-7405 TI - Factoring polynomials over global fields VL - 21 ER - TY - CHAP AB - In this survey, we report about a new algorithm for factoring polynomials due to Mark van Hoeij. The main idea is that the combinatorial problem that occurs in the Zassenhaus algorithm is reduced to a very special knapsack problem. In case of rational polynomials, this knapsack problem can be very efficiently solved by the LLL algorithm. This gives a polynomial time algorithm, which also works very well in practice. AU - Klüners, Jürgen ID - 35959 SN - 1619-7100 T2 - The LLL Algorithm TI - The van Hoeij Algorithm for Factoring Polynomials ER - TY - BOOK AU - Fuchs, Christian ID - 40146 SN - 978-3-200-01428-2 TI - Social Networking Sites and the Surveillance Society. A Critical Case Study of the Usage of studiVZ, Facebook, and MySpace by Students in Salzburg in the Context of Electronic Surveillance ER - TY - BOOK AU - Fuchs, Christian AU - E. Zimmermann, Rainer ID - 40147 SN - 978-3-8322-8341-4 TI - Practical Civil Virtues in Cyberspace: Towards the Utopian Identity of Civitas and Multitudo. Munich Series in Design Science (Münchener Schriften zur Design Science) VL - Volume 5 ER - TY - JOUR AU - Fuchs, Christian ID - 41677 IS - 1 JF - tripleC (Cognition, Communication, Co-operation) – Open Access Journal for a Global Sustainable Information Society TI - Some Reflections on Manuel Castells’ Book “Communication Power“ VL - 7 ER - TY - JOUR AU - Fuchs, Christian ID - 41680 IS - 3 JF - Információs Társadalom (Information Society) TI - A fenntartható információs társadalom ideológiai tájképe. 2. rész (Sustainable Information Society as Ideology. Second Part, in Hungarian) VL - 9 ER -