3 papers
quant-ph2000
Lossless quantum coding in many-letter spaces
Kim J. Bostroem
Based on the concept of many-letter theory, an observable is defined measuring the raw quantum information content of single messages. A general characterization of quantum codes u…
quant-ph2000
Concepts of a quantum information theory of many letters
Kim J. Bostroem
A theoretical framework is presented allowing the treatment of quantum messages with components of variable length. To this aim a many-letter space, similiar to the Fock space, is…
quant-ph2000
Time symmetry in Rigged Hilbert Spaces
Kim J. Bostroem
Despite the fact that the fundamental physical laws are symmetric in time, most observed processes do not show this symmetry. Especially the phenomenon of decay seems to involve a…