Narrow bounds for the quantum capacity of thermal attenuators

Bounding the capacity of thermal attenuators would give a powerful instrument to describe decoherence occurring in optical fibres and free space links. Here, the authors improve on the existing upper bounds in the region of small thermal noise, which is of interest for quantum communication.

Bibliographic Details
Main Authors: Matteo Rosati, Andrea Mari, Vittorio Giovannetti
Format: Article
Language:English
Published: Nature Publishing Group 2018-10-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-018-06848-0