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13 papers · 2 filters
Coherent control of quantum systems as a resource theory
J. M. Matera, D. Egloff, N. Killoran +1
Control at the interface between the classical and the quantum world is fundamental in quantum physics. In particular, how classical control is enhanced by coherence effects is an…
System-time entanglement in a discrete time model
A. Boette, R. Rossignoli, N. Gigena +1
We present a model of discrete quantum evolution based on quantum correlations between the evolving system and a reference quantum clock system. A quantum circuit for the model is…
Entanglement in fermion systems
N. Gigena, R. Rossignoli
We analyze the problem of quantifying entanglement in pure and mixed states of fermionic systems with fixed number parity yet not necessarily fixed particle number. The "mode entan…
Quantum information as a non-Kolmogorovian generalization of Shannon's theory
F. Holik, G. M. Bosyk, G. Bellomo
In this article we discuss the formal structure of a generalized information theory based on the extension of the probability calculus of Kolmogorov to a (possibly) non-commutative…
Non-transverse factorizing fields and entanglement in finite spin systems
M. Cerezo, R. Rossignoli, N. Canosa
We determine the conditions for the existence of non-transverse factorizing magnetic fields in general spin arrays with anisotropic XYZ couplings of arbitrary range. It is first sh…
A family of generalized quantum entropies: definition and properties
G. M. Bosyk, S. Zozor, F. Holik +2
We present a quantum version of the generalized -entropies, introduced by Salicrú \textit{et al.} for the study of classical probability distributions. We establish their ba…