<div class="csl-bib-body">
<div class="csl-entry">Rotter, S. (2024, September 23). <i>Non-Hermitian Physics with Fisher Information</i> [Conference Presentation]. 21st International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics (PHHQP-XXI), Chania, Greece.</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/202010
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dc.description.abstract
Using waves to explore our environment is a widely used paradigm, ranging from seismology to radar technology, and from biomedical imaging to precision measurements. In all these fields, the central aim is to gather as much information as possible about an object of interest by sending a probing wave at it and processing the information delivered back to a detector. In my talk, I will demonstrate that an electromagnetic wave scattered at an object carries locally defined and conserved information about all of the object’s constitutive parameters. Specifically, I will introduce the density and flux of Fisher information for general types of wave fields and identify the non-Hermitian sources and sinks of information through which all these new quantities satisfy a fundamental continuity equation [1]. These theoretical predictions are experimentally verified by studying a movable object embedded in a disordered environment and by measuring the corresponding Fisher information flux at microwave frequencies. These results open up the way to apply concepts from non-Hermitian physics to information theory and open up possibilities for tracking and designing the flow of information even in complex environments.
[1] Jakob Hüpfl, Felix Russo, Lukas M. Rachbauer, Dorian Bouchet, Junjie Lu, Ulrich Kuhl & Stefan Rotter, Nature Physics 20, 1294 (2024)
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.subject
Non-Hermitian Physics
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dc.subject
Scattering problems
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dc.subject
Fisher Information
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dc.title
Non-Hermitian Physics with Fisher Information
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
P 32300-N27
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dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.project.title
Wellenkontrolle in Systemen mit Absorption und Unordnung
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tuw.researchinfrastructure
Vienna Scientific Cluster
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tuw.researchTopic.id
Q1
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tuw.researchTopic.id
Q2
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tuw.researchTopic.name
Photonics
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tuw.researchTopic.name
Quantum Metrology and Precision Measurements
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tuw.researchTopic.value
50
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tuw.researchTopic.value
50
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tuw.linking
https://events.physics.uoc.gr/event/1/overview
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tuw.publication.orgunit
E136 - Institut für Theoretische Physik
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tuw.author.orcid
0000-0002-4123-1417
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tuw.event.name
21st International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics (PHHQP-XXI)
