4 papers
Gravitational redshift of broadband relativistic quantum photons
Alessio Lapponi, Alessandro Ferreri, David Edward Bruschi
We employ linearized quantum gravity to study gravitational redshift of photons in the context of relativistic and quantum physics, where photons interact in flat spacetime with a…
How cosmological expansion affects communication between distant quantum systems
Alessio Lapponi, Orlando Luongo, Stefano Mancini
A quantum communication protocol between harmonic oscillator detectors, interacting with a quantum field, is developed in a cosmological expanding background. The aim is to see if…
Making two particle detectors in flat spacetime communicate quantumly
Alessio Lapponi, Jorma Louko, Stefano Mancini
A communication protocol with non-zero quantum capacity is found when the two communicating parts are particle detector models in (3+1)-dimensional spacetime. In particular, as det…
Preserving quantum information in cosmology
Salvatore Capozziello, Alessio Lapponi, Orlando Luongo +1
The effects of cosmological expansion on quantum bosonic states are investigated, using quantum information theory. In particular, a generic Bogoliubov transformation of bosonic fi…