Information Transmission and Entanglement Distribution Over Bosonic Channels
Abstract
High-sensitivity photodetection systems have long been limited by noises of quantum-mechanical origin. Nevertheless, analyses and designs of optical communication systems have seldom employed fully quantum treatments. As a result, these works do not establish the ultimate limits on optical communication performance. This program established an inner bound on the capacity region for the Bosonic broadcast channel, and showed that this inner bound is in fact the capacity region if a new minimum output entropy conjecture is true. Evidence supporting this minimum output entropy conjecture was obtained, and its relation to a previous minimum output entropy conjecture used in the capacity theorem for the single-user thermal-noise channel was investigated. The Entropy Photon-Number Inequality, which is the quantum generalization of the classical Entropy Power Inequality, was posed and evidence supporting its validity was obtained. In other work, entanglement assistance was shown to be of no benefit in classical information transmission under a photon-number constraint unless burst-mode communication is considered.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2008
- Accession Number
- ADA481431
Entities
People
- Jeffrey H Shapiro
- Saikat Guha
- Stewart D. Personick
Organizations
- Massachusetts Institute of Technology