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7 papers · 2 filters
Role of indistinguishability in interferometric phase estimation
Laura T. Knoll, Gustavo M. Bosyk, Ignacio H. López Grande +1
We report a theoretical and experimental study on the role of indistinguishability in the estimation of an interferometric phase. In particular, we show that the quantum Fisher inf…
Separability and parity transitions in spin systems under nonuniform fields
N. Canosa, R. Mothe, R. Rossignoli
We examine the existence of completely separable ground states (GS) in finite spin- arrays with anisotropic couplings, immersed in a non-uniform magnetic field along one o…
Fermionic entanglement in the Lipkin model
M. Di Tullio, R. Rossignoli, M. Cerezo +1
We examine the fermionic entanglement in the ground state of the fermionic Lipkin model and its relation with bipartite entanglement. It is first shown that the one-body entangleme…
Non-deterministic semantics for quantum states
Juan Pablo Jorge, Federico Holik
In this work we discuss the failure of the principle of truth functionality in the quantum formalism. By exploiting this failure, we import the formalism of N-matrix theory and non…
A set of observables to determine any pure qudit state
Quimey Pears Stefano, Lorena Rebón, Silvia Ledesma +1
We present a tomographic method which requires only measurement outcomes to reconstruct \emph{any} pure quantum state of arbitrary dimension . Using the proposed scheme w…
Optimal common resource in majorization-based resource theories
G. M. Bosyk, G. Bellomo, F. Holik +2
We address the problem of finding the optimal common resource for an arbitrary family of target states in quantum resource theories based on majorization, that is, theories whose c…