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Irreversibility, time reversal and generalised entropy
KTH, Superseded Departments, Physics.
2004 (English)In: Quantum Communication, Measurement And Computing / [ed] Barnett, SM; Andersson, E; Jeffers, J; Ohberg, P; Hirota, O, 2004, Vol. 734, 383-386 p.Conference paper, Published paper (Refereed)
Abstract [en]

In a series of papers, we have discussed the dynamics of an open system. These describe the general situation when time irreversibility is involved [1]. If the system lacks memory, the evolution describes a semi group, and the general form of the corresponding infinitesimal generator was given by Gorini, Kossakowski and Sudarshan for finite dimensional state spaces [2] and for bounded operators by Lindblad [3]. Here we assume the evolution to be of this type. The general theory we present is based on the work [4] and the references there in. Here I summarize the theory in Sec. 2 and apply it to a communication situation in See. 3. This is modelled on the quantum scattering theory [7]. The response of a quantum optical system has earlier been formulated in terms of input and output states, see e.g. [8] and [9]; for a discussion see [10].

Place, publisher, year, edition, pages
2004. Vol. 734, 383-386 p.
Series
AIP Conference Proceedings, ISSN 0094-243X ; 734
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-44385ISI: 000226204400088ISBN: 0-7354-0216-7 (print)OAI: oai:DiVA.org:kth-44385DiVA: diva2:450570
Conference
7th International Conference on Quantum Communication, Measurement and Computing Location: Glasgow, Scotland, Date: JUL 25-29, 2004
Note
QC 20111021Available from: 2011-10-21 Created: 2011-10-20 Last updated: 2011-10-21Bibliographically approved

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