Harnessing spin-qubit decoherence to probe strongly interacting quantum systems

Extracting information from quantum many-body systems remains a key challenge in quantum technologies due to experimental limitations. In this work, we employ a single spin qubit to probe a strongly interacting system, creating an environment conducive to qubit decoherence. By focusing on the $XXZ$ spin chain, we observe diverse dynamics in the qubit evolution, reflecting different parameters of the chain. This demonstrates that a spin qubit can probe both quantitative properties of the spin chain and qualitative characteristics, such as the bipartite entanglement entropy, phase transitions, and perturbation propagation velocity within the system. This approach reveals the power of small quantum systems to probe the properties of large, strongly correlated quantum systems.

Authors

Institutions

Publication Details

Journal
Physical review. B./Physical review. B
Published
2025-04-18
DOI
https://doi.org/10.1103/physrevb.111.l161115
Citations
1
Primary Topic
Quantum many-body systems
Type
article
Field-Weighted Citation Impact
1.25

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Harnessing spin-qubit decoherence to probe strongly interacting quantum systems

Sambunath Das, Katarzyna Roszak, Maciej Lewenstein, Marcin Płodzień et al.
1 citations
Physical review. B./Physical review. B
Quantum many-body systems
1.25
article

Harnessing spin-qubit decoherence to probe strongly interacting quantum systems

Sambunath Das, Katarzyna Roszak, Maciej Lewenstein, Marcin Płodzień, Christina Psaroudaki
article en
1 citations

Abstract

Extracting information from quantum many-body systems remains a key challenge in quantum technologies due to experimental limitations. In this work, we employ a single spin qubit to probe a strongly interacting system, creating an environment conducive to qubit decoherence. By focusing on the $XXZ$ spin chain, we observe diverse dynamics in the qubit evolution, reflecting different parameters of the chain. This demonstrates that a spin qubit can probe both quantitative properties of the spin chain and qualitative characteristics, such as the bipartite entanglement entropy, phase transitions, and perturbation propagation velocity within the system. This approach reveals the power of small quantum systems to probe the properties of large, strongly correlated quantum systems.

Physical review. B./Physical review. BVol. 111(16)
Institució Catalana de Recerca i Estudis Avançats (ES), Institute of Photonic Sciences (ES), Czech Academy of Sciences (CZ), Université Paris Cité (FR), Université Paris Sciences et Lettres (FR), Sorbonne Université (FR), École Normale Supérieure (BI), Laboratoire Médiations (FR)
“la Caixa” Foundation, European Commission, Ministerstvo Školství, Mládeže a Tělovýchovy, Barcelona Supercomputing Center, QuantERA, Horizon 2020 Framework Programme, Agència de Gestió d'Ajuts Universitaris i de Recerca, European Regional Development Fund, Agencia Estatal de Investigación, H2020 European Research Council, HORIZON EUROPE Marie Sklodowska-Curie Actions
Climate action
Openalex Percentile: Top 22%
Quantum many-body systems
1.25
DOISourceOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.