%0 Journal Article %1 noauthororeditor %A Wang, Jiawei %A Valligatla, Sreeramulu %A Yin, Yin %A Schwarz, Lukas %A Medina-Sánchez, Mariana %A Baunack, Stefan %A Lee, Ching Hua %A Thomale, Ronny %A Li, Shilong %A Fomin, Vladimir M. %A Ma, Libo %A Schmidt, Oliver G. %D 2023 %J Nat. Photon. %K c %N 1 %P 120-125 %R 10.1038/s41566-022-01107-7 %T Experimental observation of Berry phases in optical Möbius-strip microcavities %U https://doi.org/10.1038/s41566-022-01107-7 %V 17 %X The Möbius strip, a fascinating loop structure with one-sided topology, provides a rich playground for manipulating the non-trivial topological behaviour of spinning particles, such as electrons, polaritons and photons, in both real and parameter spaces. For photons resonating in a Möbius-strip cavity, the occurrence of an extra phase—known as the Berry phase—with purely topological origin is expected due to its non-trivial evolution in parameter space. However, despite numerous theoretical investigations, characterizing the optical Berry phase in a Möbius-strip cavity has remained elusive. Here we report the experimental observation of the Berry phase generated in optical Möbius-strip microcavities. In contrast to theoretical predictions in optical, electronic and magnetic Möbius-topology systems where only Berry phase π occurs, we demonstrate that a variable Berry phase smaller than π can be acquire by generating elliptical polarization of resonating light. Möbius-strip microcavities as integrable and Berry-phase-programmable optical systems are of great interest in topological physics and emerging classical or quantum photonic applications.

@article{noauthororeditor, abstract = {The Möbius strip, a fascinating loop structure with one-sided topology, provides a rich playground for manipulating the non-trivial topological behaviour of spinning particles, such as electrons, polaritons and photons, in both real and parameter spaces. For photons resonating in a Möbius-strip cavity, the occurrence of an extra phase—known as the Berry phase—with purely topological origin is expected due to its non-trivial evolution in parameter space. However, despite numerous theoretical investigations, characterizing the optical Berry phase in a Möbius-strip cavity has remained elusive. Here we report the experimental observation of the Berry phase generated in optical Möbius-strip microcavities. In contrast to theoretical predictions in optical, electronic and magnetic Möbius-topology systems where only Berry phase π occurs, we demonstrate that a variable Berry phase smaller than π can be acquire by generating elliptical polarization of resonating light. Möbius-strip microcavities as integrable and Berry-phase-programmable optical systems are of great interest in topological physics and emerging classical or quantum photonic applications.}, added-at = {2023-04-19T15:31:23.000+0200}, author = {Wang, Jiawei and Valligatla, Sreeramulu and Yin, Yin and Schwarz, Lukas and Medina-Sánchez, Mariana and Baunack, Stefan and Lee, Ching Hua and Thomale, Ronny and Li, Shilong and Fomin, Vladimir M. and Ma, Libo and Schmidt, Oliver G.}, biburl = {https://www.bibsonomy.org/bibtex/23ca7a55dff574358568cb1d0862450d9/ctqmat}, day = 22, description = {Experimental observation of Berry phases in optical Möbius-strip microcavities}, doi = {10.1038/s41566-022-01107-7}, interhash = {96b3877985b1c5dbc48754bc61e3b010}, intrahash = {3ca7a55dff574358568cb1d0862450d9}, journal = {Nat. Photon.}, keywords = {c}, month = {12}, number = 1, pages = {120-125}, timestamp = {2024-03-12T09:26:28.000+0100}, title = {Experimental observation of Berry phases in optical Möbius-strip microcavities}, url = {https://doi.org/10.1038/s41566-022-01107-7}, volume = 17, year = 2023 }