Experimental protocol for qubit-environment entanglement detection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00639059" target="_blank" >RIV/68378271:_____/25:00639059 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0369572" target="_blank" >https://hdl.handle.net/11104/0369572</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1116/5.0277965" target="_blank" >10.1116/5.0277965</a>
Alternative languages
Result language
angličtina
Original language name
Experimental protocol for qubit-environment entanglement detection
Original language description
Decoherence is a manifestation of the coupling of a system with its environment. The resulting loss of information can hamper the functioning of quantum devices, hence, there is a need to understand its origin and dynamics. Decoherence can stem from entanglement, but it can also be classical in nature. Indeed, methods have been developed to understand whether qubit-environment entanglement (QEE) is actually present in some important classes of quantum channels—pure dephasing. Their practicality resides in the fact that they only require accessing the system qubit. In this paper, we show an implementation of this technique in a photonic quantum channel simulator via a scheme that has been tailored to the system under study. By controlling the input state of the environment in our simulation, we can check the occurrence of qubit environment entanglement in simple, yet insightful test cases. Our results showcase the usefulness and experimental relevance of the QEE witnessing technique.
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
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
AVS Quantum Science
ISSN
2639-0213
e-ISSN
2639-0213
Volume of the periodical
7
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
031401
UT code for WoS article
001574119100001
EID of the result in the Scopus database
2-s2.0-105016214901