@article {3907, title = {PT-like phase transition and limit cycle oscillations in non-reciprocally coupled optomechanical oscillators levitated in vacuum}, journal = {Nat. Phys.}, year = {2024}, note = {

Publisher: Nature Publishing Group

}, pages = {1{\textendash}7}, abstract = {

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{\textendash}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.

}, keywords = {LF, MF}, issn = {1745-2481}, doi = {10.1038/s41567-024-02590-1}, url = {https://www.nature.com/articles/s41567-024-02590-1}, author = {Li{\v s}ka, Vojt{\v e}ch and Zem{\'a}nkov{\'a}, Tereza and J{\'a}kl, Petr and {\v S}iler, Martin and Simpson, Stephen H. and Zem{\'a}nek, Pavel and Brzobohat{\'y}, Oto} } @article {3754, title = {Synchronization of spin-driven limit cycle oscillators optically levitated in vacuum}, journal = {Nature Communications}, volume = {14}, year = {2023}, pages = {5441}, keywords = {LF, MF}, doi = {10.1038/s41467-023-41129-5}, url = {https://doi.org/10.1038/s41467-023-41129-5}, author = {Brzobohat{\'y}, Oto and Ducha{\v n}, Martin and J{\'a}kl, Petr and Je{\v z}ek, Jan and {\v S}iler, Martin and Zem{\'a}nek, Pavel and Simpson, Stephen H.} } @article {3606, title = {All-optical sub-Kelvin sympathetic cooling of a levitated microsphere in vacuum}, journal = {Optica}, volume = {9}, year = {2022}, month = {Sep}, pages = {1000{\textendash}1002}, abstract = {

We demonstrate all-optical sympathetic cooling of a laser-trapped microsphere to sub-Kelvin temperatures, mediated by optical binding to a feedback-cooled adjacent particle. Our study opens prospects for multi-particle quantum entanglement and sensing in levitated optomechanics.

}, keywords = {LF, MF}, doi = {10.1364/OPTICA.466337}, url = {https://opg.optica.org/optica/abstract.cfm?URI=optica-9-9-1000}, author = {Y. Arita and G. D. Bruce and E. M. Wright and S. H. Simpson and P. Zem{\'a}nek and K. Dholakia} } @article {3545, title = {Challenges on optical printing of colloidal nanoparticles}, journal = {J. Chem. Phys.}, volume = {156}, year = {2022}, month = {JAN 21}, pages = {034201}, keywords = {LF, MF}, issn = {0021-9606}, doi = {10.1063/5.0078454}, author = {Violi, Ianina L. and Martinez, Luciana P. and Barella, Mariano and Zaza, Cecilia and Chv{\'a}tal, Lukas and Zem{\'a}nek, Pavel and Gutierrez, Marina V. and Paredes, Maria Y. and Scarpettini, Alberto F. and Olmos-Trigo, Jorge and Pais, Valeria R. and Noblega, Ivan Diaz and Cort{\`e}s, Emiliano and Saenz, Juan Jose and Bragas, Andrea V. and Gargiulo, Juli{\`a}n and Stefani, Fernando D.} } @article {3481, title = {Optically transportable optofluidic microlasers with liquid crystal cavities tuned by the electric field}, journal = {ACS Applied Materials \& Interfaces}, volume = {13}, year = {2021}, month = {OCT 21}, pages = {50657-50667}, keywords = {BF, LF, MF}, doi = {10.1021/acsami.1c11936}, author = {Jonas, Alexandr and Pil{\'a}t, Zden{\v e}k and Je{\v z}ek, Jan and Bernatov{\'a}, Silvie and Jedli{\v c}ka, Petr and Aas, Mehdi and Kiraz, Alper and Zem{\'a}nek, Pavel} } @article {3478, title = {Stochastic Hopf bifurcations in vacuum optical tweezers}, journal = {Phys. Rev. A}, volume = {104}, year = {2021}, month = {OCT 15}, pages = {043518}, keywords = {LF, MF}, issn = {2469-9926}, doi = {10.1103/PhysRevA.104.043518}, author = {Simpson, Stephen H. and Arita, Yoshihiko and Dholakia, Kishan and Zem{\'a}nek, Pavel} } @article {3335, title = {Using the transient trajectories of an optically levitated nanoparticle to characterize a stochastic Duffing oscillator}, journal = {Scientific Reports}, volume = {10}, year = {2020}, pages = {14436}, keywords = {LF, MF}, author = {Flaj{\v s}manov{\'a}, Jana and {\v S}iler, Martin and Jedli{\v c}ka, Petr and Hrub{\'y}, Franti{\v s}ek and Brzobohat{\'y}, Oto and Filip, Radim and Zem{\'a}nek, Pavel} } @article {DonatoNL19, title = {Optical Trapping, Optical Binding, and Rotational Dynamics of Silicon Nanowires in Counter-Propagating Beams}, journal = {Nano Lett.}, volume = {19}, year = {2019}, pages = {342-352}, keywords = {LF, MF}, doi = {10.1021/acs.nanolett.8b03978}, author = {Donato, Maria G. and Oto Brzobohat{\'y} and S. H. Simpson and Irrera, Alessia and Leonardi, Antonio A. and Lo Faro, Maria J. and Vojtech Svak and Marag{\`o}, Onofrio M. and P. Zem{\'a}nek} } @article { BrzobohatyOL19, title = {Optomechanical properties of optically self-arranged colloidal waveguides}, journal = {Opt. Lett.}, volume = {44}, year = {2019}, pages = {707-710}, keywords = {LF, MF}, doi = {10.1364/OL.44.000707}, author = {Oto Brzobohat{\'y} and Luk{\'a}{\v s} Chv{\'a}tal and P. Zem{\'a}nek} } @article { ArzolaSR19, title = {Spin to orbital light momentum conversion visualized by particle trajectory}, journal = {Sci. Rep.}, volume = {9}, year = {2019}, pages = {4127:1-7}, keywords = {LF, MF}, doi = {10.1038/s41598-019-40475-z}, author = {Alejandro V. Arzola and Luk{\'a}{\v s} Chv{\'a}tal and P J{\'a}kl and P. Zem{\'a}nek} } @article { BrzobohatyACSPHOT19, title = {Tunable Soft-Matter Optofluidic Waveguides Assembled by Light}, journal = {ACS Phot.}, volume = {6}, year = {2019}, pages = {403-410}, keywords = {LF, MF}, doi = {10.1021/acsphotonics.8b01331}, author = {Oto Brzobohat{\'y} and Luk{\'a}{\v s} Chv{\'a}tal and A. Jon{\'a}{\v s} and M {\v S}iler and J. Ka{\v n}ka and J Je{\v z}ek and P. Zem{\'a}nek} } @article {SilerPRL18, title = {Diffusing up the Hill: Dynamics and Equipartition in Highly Unstable Systems}, journal = {Phys. Rev. Lett.}, volume = {121}, year = {2018}, pages = {23601}, keywords = {LF, MF}, doi = {10.1103/PhysRevLett.121.230601}, author = {M {\v S}iler and Ornigotti, L. and Oto Brzobohat{\'y} and P J{\'a}kl and Artem Ryabov and Holubec, V. and P. Zem{\'a}nek and Radim Filip} } @article { DamkovaLSA18, title = {Enhancement of the {\textquoteleft}tractor-beam{\textquoteright} pulling force on an optically bound structure}, journal = {Light: Sci. Appl.}, volume = {7}, year = {2018}, pages = {17135}, keywords = {LF, MF}, doi = {10.1038/lsa.2017.135}, author = {Damkov{\'a}, Jana and Luk{\'a}{\v s} Chv{\'a}tal and J Je{\v z}ek and Oulehla, Jindrich and Oto Brzobohat{\'y} and P. Zem{\'a}nek} } @article {SvakNC18, title = {Transverse spin forces and non-equilibrium particle dynamics in a circularly polarized vacuum optical trap}, journal = {Nature Commun.}, volume = {9}, year = {2018}, pages = {5453}, keywords = {LF, MF}, doi = {10.1038/s41467-018-07866-8}, author = {Vojtech Svak and Oto Brzobohat{\'y} and M {\v S}iler and P J{\'a}kl and J. Ka{\v n}ka and P. Zem{\'a}nek and S. H. Simpson} } @article { GargiuloACSNano17, title = {Accuracy and Mechanistic Details of Optical Printing of Single Au and Ag Nanoparticles}, journal = {ACS nano}, volume = {11}, number = {10}, year = {2017}, pages = {9678{\textendash}9688}, keywords = {LF, MF}, doi = {10.1021/acsnano.7b04136}, author = {Gargiulo, Juli{\`a}n and Violi, Ianina L and Cerrota, Santiago and Luk{\'a}{\v s} Chv{\'a}tal and Cort{\`e}s, Emiliano and Perassi, Eduardo M and Diaz, Fernando and P. Zem{\'a}nek and Stefani, Fernando D} } @article { KarasekOL17, title = {Dynamics of an optically bound structure made of particles of unequal sizes}, journal = {Opt. Lett.}, volume = {42}, number = {7}, year = {2017}, pages = {1436-1439}, keywords = {LF, MF}, issn = {0146-9592}, doi = {10.1364/OL.42.001436}, author = {V{\'\i}t{\v e}zslav Kar{\'a}sek and M {\v S}iler and Oto Brzobohat{\'y} and P. Zem{\'a}nek} } @article { ArzolaPRL17, title = {Omnidirectional Transport in Fully Reconfigurable Two Dimensional Optical Ratchets}, journal = {Phys. Rev. Lett.}, volume = {118}, year = {2017}, pages = {138002}, keywords = {LF, MF}, doi = {10.1103/PhysRevLett.118.138002}, author = {Alejandro V. Arzola and Villasante-Barahona, Mario and Karen Volke-Sep{\'u}lveda and P J{\'a}kl and P. Zem{\'a}nek} } @article { SimpsonNL17, title = {Optical Binding of Nanowires}, journal = {Nano Lett.}, volume = {17}, number = {6}, year = {2017}, pages = {3485-3492}, keywords = {LF, MF}, doi = {10.1021/acs.nanolett.7b00494}, author = {S. H. Simpson and P. Zem{\'a}nek and Marag{\`o}, Onofrio M. and Jones, Philip H. and Hanna, Simon} } @article { SilerSR17, title = {Thermally induced micro-motion by inflection in optical potential}, journal = {Sci. Rep.}, volume = {7}, year = {2017}, pages = {1697}, keywords = {LF, MF}, issn = {2045-2322}, doi = {10.1038/s41598-017-01848-4}, author = {M {\v S}iler and P J{\'a}kl and Oto Brzobohat{\'y} and Artem Ryabov and Radim Filip and P. Zem{\'a}nek} }