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dc.contributor.author
Abbott, Alastair A.
dc.contributor.author
Silva, Ralph
dc.contributor.author
Wechs, Julian
dc.contributor.author
Brunner, Nicolas
dc.contributor.author
Branciard, Cyril
dc.date.accessioned
2019-10-23T12:03:31Z
dc.date.available
2019-10-23T02:32:04Z
dc.date.available
2019-10-23T12:02:34Z
dc.date.available
2019-10-23T12:03:31Z
dc.date.issued
2019-10-14
dc.identifier.issn
2521-327X
dc.identifier.other
10.22331/q-2019-10-14-194
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/372259
dc.identifier.doi
10.3929/ethz-b-000372259
dc.description.abstract
A weak measurement performed on a pre- and post-selected quantum system can result in an average value that lies outside of the observable's spectrum. This effect, usually referred to as an ``anomalous weak value'', is generally believed to be possible only when a non-trivial post-selection is performed, i.e., when only a particular subset of the data is considered. Here we show, however, that this is not the case in general: in scenarios in which several weak measurements are sequentially performed, an anomalous weak value can be obtained without post-selection, i.e., without discarding any data. We discuss several questions that this raises about the subtle relation between weak values and pointer positions for sequential weak measurements. Finally, we consider some implications of our results for the problem of distinguishing different causal structures.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Anomalous Weak Values Without Post-Selection
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2019-09-02
ethz.journal.title
Quantum
ethz.journal.volume
3
en_US
ethz.pages.start
194
en_US
ethz.size
15 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Fully quantum thermodynamics of finite-size systems
en_US
ethz.identifier.wos
ethz.publication.place
Wien
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02511 - Institut für Theoretische Physik / Institute for Theoretical Physics::03781 - Renner, Renato / Renner, Renato
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02511 - Institut für Theoretische Physik / Institute for Theoretical Physics::03781 - Renner, Renato / Renner, Renato
ethz.grant.agreementno
165843
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Projekte MINT
ethz.date.deposited
2019-10-23T02:32:13Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-10-23T12:02:46Z
ethz.rosetta.lastUpdated
2022-03-28T23:55:44Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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