Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
318 1 |
Ultima descărcare din IBN: 2023-07-12 03:25 |
SM ISO690:2012 WANG, Jiawei, VALLIGATLA, Sreeramulu, YIN, Yin, SCHWARZ, Lukas, MEDINA-SANCHEZ, Mariana, BAUNACK, Stefan, LEE, Ching Hua, THOMALE, Ronny, LI, Shilong, FOMIN, Vladimir, MA, Libo, SCHMIDT, Oliver. Experimental observation of Berry phases in optical Möbius-strip microcavities. In: Nature Photonics, 2023, vol. 17, pp. 120-125. ISSN 1749-4885. DOI: https://doi.org/10.1038/s41566-022-01107-7 |
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Nature Photonics | |
Volumul 17 / 2023 / ISSN 1749-4885 | |
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DOI:https://doi.org/10.1038/s41566-022-01107-7 | |
Pag. 120-125 | |
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Rezumat | |
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 acquired 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. |
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Cuvinte-cheie Berry's phase, Loop structure, Non-trivial, Optical electronics, Optical-, Parameter spaces, Polaritons, Real-space, Spinning particles, Theoretical investigations |
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