Achievable rates for the Gaussian quantum channel - art. no. 062301

Citation
J. Harrington et J. Preskill, Achievable rates for the Gaussian quantum channel - art. no. 062301, PHYS REV A, 6406(6), 2001, pp. 2301
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
1050-2947 → ACNP
Volume
6406
Issue
6
Year of publication
2001
Database
ISI
SICI code
1050-2947(200112)6406:6<2301:ARFTGQ>2.0.ZU;2-Z
Abstract
We study the properties of quantum stabilizer codes that embed a finite-dim ensional protected code space in an infinite-dimensional Hilbert space. The stabilizer group of such a code is associated with a symplectically integr al lattice in the phase space of 2N canonical variables. From the existence of symplectically integral lattices with suitable properties, we infer a l ocker bound on the quantum capacity of the Gaussian quantum channel that ma tches the one-shot coherent information optimized over Gaussian input state s.