<div class="csl-bib-body">
<div class="csl-entry">Schmiedmayer, H.-J. (2023, October 10). <i>Quantum simulators for Quantum Field Theories</i> [Conference Presentation]. QuFiCh Workshop: Brainstorm on Intersections between Quantum Fields and Quantum Chemistry 2023, Luxemburg, Luxembourg.</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/190004
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dc.description.abstract
Quantum Simulation promises insight into quantum physics problems which are beyond the ability to calculate with conventional methods. Quantum simulators can be built either using a ‘digital’ Trotter decomposition of the problem or by directly building the Hamiltonian in the lab and performing ‘analogue’ experiments. I will present here a different approach, by which the model to simulate a Quantum Field Theory emerges naturally from a completely different microscopic Hamiltonian. I will illustrate this in the example of the emergence of the Sine-Gordon quantum field theory from the microscopic description of two tunnel coupled super fluids [1]. Special emphasis will be put on how to verify such emergent quantum simulators and how to characterize them. Thereby I will present different tools: High order correlation functions and their factorization [1], the evaluation of the quantum effective action and the momentum dependence of propagators and vertices (running couplings, renormalization of mass etc ..) of the emerging quantum field theory [2] and quantum field tomography that points to a new way to read out quantum simulators [3] and our path to directly learn the quantum simulated Hamiltonian from the experimental data. Together they establish general methods to analyse quantum systems through experiments and thus represents a crucial ingredient towards the implementation and verification of emerging quantum simulators. As an example, I will report on measuring area laws of mutual information [4] in a quantum simulation of the Klein-Gordon model.
Work performed in collaboration with the groups of Th. Gasenzer und J. Berges (Heidelberg), Jens Eisert (FU Berlin) and E. Demler (Harvard/ETH). Supported by the DFG-FWF: SFB ISOQUANT, and the EU: ERC-AdG QuantumRelax and EmQ
en
dc.language.iso
en
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dc.subject
Quantum simulation
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dc.title
Quantum simulators for Quantum Field Theories
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.researchTopic.id
Q6
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tuw.researchTopic.name
Quantum Many-body Systems Physics
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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tuw.event.name
QuFiCh Workshop: Brainstorm on Intersections between Quantum Fields and Quantum Chemistry 2023
en
tuw.event.startdate
09-10-2023
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tuw.event.enddate
11-10-2023
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Luxemburg
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tuw.event.country
LU
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tuw.event.presenter
Schmiedmayer, Hannes-Jörg
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tuw.event.track
Single Track
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
100
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item.languageiso639-1
en
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item.grantfulltext
restricted
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item.cerifentitytype
Publications
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.fulltext
no Fulltext
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crisitem.author.dept
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
