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4 papers · 2 filters
Quantum key distribution with untrusted detectors
P. Gonzalez, L. Rebon, T. Ferreira da Silva +6
Side-channel attacks currently constitute the main challenge for quantum key distribution (QKD) to bridge theory with practice. So far two main approaches have been introduced to a…
Geometric approach to extend Landau-Pollak uncertainty relations for positive operator-valued measures
G. M. Bosyk, S. Zozor, M. Portesi +2
We provide a twofold extension of Landau--Pollak uncertainty relations for mixed quantum states and for positive operator-valued measures, by recourse to geometric considerations.…
Phase diagram study of a dimerized spin-S zig-zag ladder
J. M. Matera, C. A. Lamas
The phase diagram of a frustrated spin- zig-zag ladder is studied through different numerical and analytical methods. We show that for arbitrary , there is a family of Hamilt…
A semiclassical condition for chaos based on Pesin theorem
Ignacio Gomez, Marcelo Losada, Sebastian Fortin +2
A semiclassical method to determine if the classical limit of a quantum system is chaotic or not, based on Pesin theorem, is presented. The method is applied to a phenomenological…