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Entanglement renormalization and boundary critical phenomena
P. Silvi, V. Giovannetti, P. Calabrese +2
The multiscale entanglement renormalization ansatz is applied to the study of boundary critical phenomena. We compute averages of local operators as a function of the distance from…
Critical properties of homogeneous binary trees
P. Silvi, V. Giovannetti, S. Montangero +3
Many-body states whose wave-function admits a representation in terms of a uniform binary-tree tensor decomposition are shown to obey to power-law two-body correlations functions.…
Optimal Control at the Quantum Speed Limit
Tommaso Caneva, Michael Murphy, Tommaso Calarco +4
Optimal control theory is a promising candidate for a drastic improvement of the performance of quantum information tasks. We explore its ultimate limit in paradigmatic cases, and…
Homogeneous MERA states: an information theoretical analysis
V. Giovannetti, S. Montangero, M. Rizzi +1
Homogeneous Multi-scale Entanglement Renormalization Ansazt (MERA) state have been recently introduced to describe quantum critical systems. Here we present an extensive analysis o…
Probing a composite spin-boson environment
Neil P. Oxtoby, Ángel Rivas, Susana F. Huelga +1
We consider non-interacting multi-qubit systems as controllable probes of an environment of defects/impurities modelled as a composite spin-boson environment. The spin-boson enviro…