Negative Wigner function by decaying interaction from equilibrium
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73627237" target="_blank" >RIV/61989592:15310/24:73627237 - isvavai.cz</a>
Result on the web
<a href="https://quantum-journal.org/papers/q-2024-12-17-1566/" target="_blank" >https://quantum-journal.org/papers/q-2024-12-17-1566/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22331/q-2024-12-17-1566" target="_blank" >10.22331/q-2024-12-17-1566</a>
Alternative languages
Result language
angličtina
Original language name
Negative Wigner function by decaying interaction from equilibrium
Original language description
Bosonic systems with negative Wigner function superposition states are fundamentally witnessing nonlinear quantum dynamics beyond linearized systems and, recently, have become essential resources of quantum technology with many applications. Typically, they appear due to sophisticated combination of external drives, nonlinear control, measurements or strong nonlinear dissipation of subsystems to an environment. Here, we propose a conceptually different and more autonomous way to obtain such states, avoiding these ingredients, using purely sudden interaction decay in the paradigmatic interacting qubit-oscillator system weakly coupled to bath at thermal equilibrium in a low-temperature limit. We demonstrate simultaneously detectable unconditional negative Wigner function and quantum coherence and their qualitative enhancement employing more qubits.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
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
ISSN
2521-327X
e-ISSN
2521-327X
Volume of the periodical
8
Issue of the periodical within the volume
DEC
Country of publishing house
AT - AUSTRIA
Number of pages
17
Pages from-to
"1566-1"-"1566-17"
UT code for WoS article
001379181600001
EID of the result in the Scopus database
2-s2.0-85212924712