Titel:	Conditional Action and Imperfect Erasure of Qubits
Autor(en):	Schmidt, Heinz-Jürgen
ORCID des Autors:	https://orcid.org/0000-0001-8087-3204
Zusammenfassung:	We consider state changes in quantum theory due to “conditional action” and relate these to the discussion of entropy decrease due to interventions of “intelligent beings” and the principles of Szilard and Landauer/Bennett. The mathematical theory of conditional actions is a special case of the theory of “instruments”, which describes changes of state due to general measurements and will therefore be briefly outlined in the present paper. As a detailed example, we consider the imperfect erasure of a qubit that can also be viewed as a conditional action and will be realized by the coupling of a spin to another small spin system in its ground state.
Bibliografische Angaben:	Schmidt H. J. (2021): Conditional Action and Imperfect Erasure of Qubits. Entropy (Basel, Switzerland), 23(3), 289.
URL:	https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202106074950
Schlagworte:	conditional action; Maxwell’s demon; erasure of memory
Erscheinungsdatum:	26-Feb-2021
Lizenzbezeichnung:	Attribution 4.0 International
URL der Lizenz:	http://creativecommons.org/licenses/by/4.0/
Publikationstyp:	Einzelbeitrag in einer wissenschaftlichen Zeitschrift [article]
Enthalten in den Sammlungen:	FB06 - Hochschulschriften Open-Access-Publikationsfonds

Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons