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4 papers · 2 filters
Quantum bit error rate in modeled atmospheres
Nicolo' Antonietti, Marina Mondin, Fred Daneshgaran +6
The quantum bit error rate is a key quantity in quantum communications. If the quantum channel is the atmosphere, the information is usually encoded in the polarization of a photon…
Natural Numbers and Quantum States in Fock Space
Francesco A. Raffa, Mario Rasetti
We investigate the expression of natural numbers in any base from a quantum point of view. In particular, resorting to the one-to-one correspondence between natural numbers and Foc…
Momentum-space analysis of multipartite entanglement at quantum phase transitions
Alberto Anfossi, Paolo Giorda, Arianna Montorsi
We investigate entanglement properties at quantum phase transitions of an integrable extended Hubbard model in the momentum space representation. Two elementary subsystems are reco…
Structure of quantum correlations in momentum space and off diagonal long range order in eta pairing and BCS states
Paolo Giorda, Alberto Anfossi
The quantum states built with the eta paring mechanism i.e., eta pairing states, were first introduced in the context of high temperature superconductivity where they were recogniz…