Local Readout and Control of Current and Kinetic Energy Operators in Optical Lattices

Quantum gas microscopes have revolutionized quantum simulations with ultracold atoms, allowing one to measure local observables and snapshots of quantum states. However, measurements so far were mostly carried out in the occupation basis. Here, we demonstrate how all kinetic operators, such as kinetic energy or current operators, can be measured and manipulated with single-bond resolution. Beyond simple expectation values of these observables, the single-shot measurements allow one to access full counting statistics and complex correlation functions. Our work paves the way for the implementation of efficient quantum state tomography and hybrid quantum computing protocols for itinerant particles on a lattice. In addition, we demonstrate how site-resolved programmable potentials enable a spatially selective, parallel readout in different bases as well as the engineering of arbitrary initial states.

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Publication Details

Journal
Physical Review Letters
Published
2024-08-05
DOI
https://doi.org/10.1103/physrevlett.133.063401
Citations
33
Primary Topic
Quantum Computing Algorithms and Architecture
Type
article
Field-Weighted Citation Impact
11.46

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article

Local Readout and Control of Current and Kinetic Energy Operators in Optical Lattices

Julian F. Wienand, SeungJung Huh, Immanuel Bloch, Monika Aidelsburger et al.
33 citations
Physical Review Letters
Quantum Computing Algorithms and Architecture
11.46
article

Local Readout and Control of Current and Kinetic Energy Operators in Optical Lattices

Julian F. Wienand, SeungJung Huh, Immanuel Bloch, Monika Aidelsburger, Alexander Impertro, C. Schweizer, Simon Karch
article en
33 citations

Abstract

Quantum gas microscopes have revolutionized quantum simulations with ultracold atoms, allowing one to measure local observables and snapshots of quantum states. However, measurements so far were mostly carried out in the occupation basis. Here, we demonstrate how all kinetic operators, such as kinetic energy or current operators, can be measured and manipulated with single-bond resolution. Beyond simple expectation values of these observables, the single-shot measurements allow one to access full counting statistics and complex correlation functions. Our work paves the way for the implementation of efficient quantum state tomography and hybrid quantum computing protocols for itinerant particles on a lattice. In addition, we demonstrate how site-resolved programmable potentials enable a spatially selective, parallel readout in different bases as well as the engineering of arbitrary initial states.

Physical Review LettersVol. 133(6)
Max Planck Institute of Quantum Optics (DE), Munich Center for Quantum Science and Technology (DE), Ludwig-Maximilians-Universität München (DE)
Australian Government, European Commission, National Research Foundation, Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, National Research Foundation of Korea, Ministry of Science and ICT, South Korea, HORIZON EUROPE Framework Programme, H2020 Marie Skłodowska-Curie Actions
Affordable and clean energy
Openalex Percentile: Top 1%
Quantum Computing Algorithms and Architecture
11.46
DOIOpen Access PDFOpenAlex
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Local Readout and Control of Current and Kinetic Energy Operators in Optical Lattices — Julian F. Wienand, SeungJung Huh, et al. · Physical Review Letters (2024) | TGRS Research Map | TGRS