PT-like phase transition and limit cycle oscillations in non-reciprocally coupled optomechanical oscillators levitated in vacuum
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F24%3A00588126" target="_blank" >RIV/68081731:_____/24:00588126 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41567-024-02590-1" target="_blank" >https://www.nature.com/articles/s41567-024-02590-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41567-024-02590-1" target="_blank" >10.1038/s41567-024-02590-1</a>
Alternative languages
Result language
angličtina
Original language name
PT-like phase transition and limit cycle oscillations in non-reciprocally coupled optomechanical oscillators levitated in vacuum
Original language description
Nanoparticles levitated in an optical trap provide a versatile platform to study mechanical oscillators in a controlled environment with tuneable parameters. Recently, it has become possible to couple two of these optomechanical oscillators. Here we demonstrate the collective non-Hermitian dynamics of such a pair of non-conservatively coupled oscillators. We take advantage of the tunability of the optical interactions between the particles in our system and set the optical interaction between the particles to be purely non-reciprocal. By continuously varying the relative power of the trapping beams, we take the system through a transition similar to a parity–time phase transition. A Hopf bifurcation at a critical point results in the formation of collective limit cycle oscillations, resembling those observed in phonon lasers. These coupled levitated oscillators provide a platform for exceptional point optomechanical sensing and can be extended to multi-particle systems, paving the way for the development of topological optomechanical media.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Nature Physics
ISSN
1745-2473
e-ISSN
1745-2481
Volume of the periodical
20
Issue of the periodical within the volume
10
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
1622-1628
UT code for WoS article
001276007500003
EID of the result in the Scopus database
2-s2.0-85199573337