Please use this identifier to cite or link to this item: https://doi.org/10.1038/ncomms2821
DC FieldValue
dc.titleAn information-theoretic principle implies that any discrete physical theory is classical
dc.contributor.authorPfister, C.
dc.contributor.authorWehner, S.
dc.date.accessioned2014-07-04T03:09:07Z
dc.date.available2014-07-04T03:09:07Z
dc.date.issued2013
dc.identifier.citationPfister, C., Wehner, S. (2013). An information-theoretic principle implies that any discrete physical theory is classical. Nature Communications 4 : -. ScholarBank@NUS Repository. https://doi.org/10.1038/ncomms2821
dc.identifier.issn20411723
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/77819
dc.description.abstractIt has been suggested that nature could be discrete in the sense that the underlying state space of a physical system has only a finite number of pure states. Here we present a strong physical argument for the quantum theoretical property that every state space has infinitely many pure states. We propose a simple physical postulate that dictates that the only possible discrete theory is classical theory. More specifically, we postulate that no information gain implies no disturbance or, read in the contrapositive, that disturbance leads to some form of information gain. Furthermore, we show that non-classical discrete theories are still ruled out even if we relax the postulate to hold only approximately in the sense that no information gain only causes a small amount of disturbance. Our postulate also rules out popular generalizations such as the Popescu-Rohrlich-box that allows non-local correlations beyond the limits of quantum theory. © 2013 Macmillan Publishers Limited. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1038/ncomms2821
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCOMPUTER SCIENCE
dc.description.doi10.1038/ncomms2821
dc.description.sourcetitleNature Communications
dc.description.volume4
dc.description.page-
dc.identifier.isiut000320589900047
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

21
checked on Oct 20, 2021

WEB OF SCIENCETM
Citations

22
checked on Oct 20, 2021

Page view(s)

85
checked on Oct 14, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.