Signature of quantumness in pure decoherence control
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00575218" target="_blank" >RIV/68378271:_____/23:00575218 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevA.108.012412" target="_blank" >https://doi.org/10.1103/PhysRevA.108.012412</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.108.012412" target="_blank" >10.1103/PhysRevA.108.012412</a>
Alternative languages
Result language
angličtina
Original language name
Signature of quantumness in pure decoherence control
Original language description
We study a decoherence reduction scheme that involves an intermediate measurement on the qubit in an equal superposition basis, in the general framework of all qubit-environment interactions that lead to qubit pure decoherence. We show under what circumstances the scheme always leads to a gain of coherence on average, regardless of the time at which the measurement is performed, demonstrating its wide range of applicability. Furthermore, we find that observing an average loss of coherence is a highly quantum effect, resulting from noncommutation of different terms in the Hamiltonian. We show the diversity of behavior of coherence as effected by the application of the scheme, which is skewed towards gain rather than loss, on a variant of the spin-boson model that does not fulfill the commutation condition.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review A
ISSN
2469-9926
e-ISSN
2469-9934
Volume of the periodical
108
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
012412
UT code for WoS article
001053004600016
EID of the result in the Scopus database
2-s2.0-85165539674