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7 papers · 2 filters
Enhanced discrimination of high-dimensional quantum states by concatenated optimal measurement strategies
M. A. Solís-Prosser, O. Jiménez, A. Delgado +1
The impossibility of deterministic and error-free discrimination among nonorthogonal quantum states lies at the core of quantum theory and constitutes a primitive for secure quantu…
Training quantum measurement devices to discriminate unknown non-orthogonal quantum states
D. Concha, L. Pereira, L. Zambrano +1
Here, we study the problem of decoding information transmitted through unknown quantum states. We assume that Alice encodes an alphabet into a set of orthogonal quantum states, whi…
Variational determination of multi-qubit geometrical entanglement in NISQ computers
A. D. Muñoz-Moller, L. Pereira, L. Zambrano +2
Current noise levels in physical realizations of qubits and quantum operations limit the applicability of conventional methods to characterize entanglement. In this adverse scenari…
Entropic uncertainty relations for mutually unbiased periodic coarse-grained observables resemble their discrete counterparts
Łukasz Rudnicki, Stephen P. Walborn
One of the most important and useful entropic uncertainty relations concerns a dimensional system and two mutually unbiased measurements. In such a setting, the sum of two info…
Scalable estimation of pure multi-qubit states
L. Pereira, L. Zambrano, A. Delgado
We introduce an inductive -qubit pure-state estimation method. This is based on projective measurements on states of separable bases or entangled bases plus the compu…
Few-mode-fiber technology fine-tunes losses of quantum communication systems
A. Alarcón, J. Argillander, G. Lima +1
A natural choice for quantum communication is to use the relative phase between two paths of a single-photon for information encoding. This method was nevertheless quickly identifi…