Local coherence by thermalized intra-system coupling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73625322" target="_blank" >RIV/61989592:15310/24:73625322 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/2058-9565/ad57e8" target="_blank" >https://iopscience.iop.org/article/10.1088/2058-9565/ad57e8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/2058-9565/ad57e8" target="_blank" >10.1088/2058-9565/ad57e8</a>
Alternative languages
Result language
angličtina
Original language name
Local coherence by thermalized intra-system coupling
Original language description
Quantum superposition of energy eigenstates can appear autonomously in a single quantum two-level system coupled to a low-temperature thermal bath, if such coupling has a proper composite nature. We propose here a principally different and more feasible approach employing engineered interactions between two-level systems being thermalized into a global Gibbs state by weakly coupled thermal bath at temperature T. Therefore, in such case quantum coherence appears by a different mechanism, whereas the system-bath coupling does not have to be engineered. We demonstrate such autonomous coherence generation reaching maximum values of coherence. Moreover, it can be alternatively built up by using weaker but collective interaction with several two-level systems. This approach surpasses the coherence generated by the engineered system-bath coupling for comparable interaction strengths and directly reduces phase estimation error in quantum sensing. This represents a necessary step towards the autonomous quantum sensing.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA22-27431S" target="_blank" >GA22-27431S: Rabi Quantum Circuits with Trapped Ions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Quantum Science and Technology
ISSN
2058-9565
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
"035052-1"-"035052-14"
UT code for WoS article
001274844700001
EID of the result in the Scopus database
2-s2.0-85197433224