3 papers
quant-ph2024
A finite-resources description of a measurement process and its implications for the "Wigner's Friend" scenario
Fernando de Melo, Gabriel Dias Carvalho, Pedro S. Correia +3
Quantum mechanics started out as a theory to describe the smallest scales of energy in Nature. After a hundred years of development it is now routinely employed to describe, among…
quant-ph2020
Decay of quantumness in a measurement process: Action of a coarse-graining channel
Gabriel Dias Carvalho, Pedro Silva Correia
A model of a quantum measurement process is presented: a system consisting of a qubit in a superposition interacts with a measuring apparatus consisting of a N qubit state. Looking…
quant-ph2019
Spin-entanglement wave in a coarse-grained optical lattice
Pedro Silva Correia, Fernando de Melo
In the present work we explore a suitable coarse graining channel as a tool to describe the effective entanglement spreading in a coarse-grained spin-chain with different degrees o…