We present upper bounds on the quantum and private capacity of single-mode, phase-insentitive Bosonic Gaussian Channels based on degradable extensions. Our findings are state-of-the-art in the following parameter regions: low temperature and high transmissivity for the thermal attenuator, low temperature for additive Gaussian noise, high temperature and intermediate amplification for the thermal amplifier.

Estimating Quantum and Private capacities of Gaussian channels via degradable extensions

Fanizza, Marco;Kianvash. Farzad;Giovannetti, Vittorio
2021

Abstract

We present upper bounds on the quantum and private capacity of single-mode, phase-insentitive Bosonic Gaussian Channels based on degradable extensions. Our findings are state-of-the-art in the following parameter regions: low temperature and high transmissivity for the thermal attenuator, low temperature for additive Gaussian noise, high temperature and intermediate amplification for the thermal amplifier.
2021
Settore FIS/03 - Fisica della Materia
Quantum Physics
   QUSHIP
   QUSHIP
   MUR
   PRIN2017
   2017SRNBRK
File in questo prodotto:
File Dimensione Formato  
2103.09569.pdf

accesso aperto

Tipologia: Published version
Licenza: Solo Lettura
Dimensione 380.06 kB
Formato Adobe PDF
380.06 kB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/134862
Citazioni
  • ???jsp.display-item.citation.pmc??? 1
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 12
social impact