Non-Hermitian dynamics and nonreciprocity of optically coupled nanoparticles
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866912108611895296 |
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| author | Reisenbauer, Manuel Rudolph, Henning Egyed, Livia Hornberger, Klaus Zasedatelev, Anton V. Abuzarli, Murad Stickler, Benjamin A. Delić, Uroš |
| author_facet | Reisenbauer, Manuel Rudolph, Henning Egyed, Livia Hornberger, Klaus Zasedatelev, Anton V. Abuzarli, Murad Stickler, Benjamin A. Delić, Uroš |
| contents | Non-Hermitian dynamics, as observed in photonic, atomic, electrical, and optomechanical platforms, holds great potential for sensing applications and signal processing. Recently, fully tunable nonreciprocal optical interaction has been demonstrated between levitated nanoparticles. Here, we use this tunability to investigate the collective non-Hermitian dynamics of two nonreciprocally and nonlinearly interacting nanoparticles. We observe parity-time symmetry breaking and, for sufficiently strong coupling, a collective mechanical lasing transition, where the particles move along stable limit cycles. This work opens up a research avenue of nonequilibrium multi-particle collective effects, tailored by the dynamic control of individual sites in a tweezer array. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_02610 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Non-Hermitian dynamics and nonreciprocity of optically coupled nanoparticles Reisenbauer, Manuel Rudolph, Henning Egyed, Livia Hornberger, Klaus Zasedatelev, Anton V. Abuzarli, Murad Stickler, Benjamin A. Delić, Uroš Optics Mesoscale and Nanoscale Physics Quantum Physics Non-Hermitian dynamics, as observed in photonic, atomic, electrical, and optomechanical platforms, holds great potential for sensing applications and signal processing. Recently, fully tunable nonreciprocal optical interaction has been demonstrated between levitated nanoparticles. Here, we use this tunability to investigate the collective non-Hermitian dynamics of two nonreciprocally and nonlinearly interacting nanoparticles. We observe parity-time symmetry breaking and, for sufficiently strong coupling, a collective mechanical lasing transition, where the particles move along stable limit cycles. This work opens up a research avenue of nonequilibrium multi-particle collective effects, tailored by the dynamic control of individual sites in a tweezer array. |
| title | Non-Hermitian dynamics and nonreciprocity of optically coupled nanoparticles |
| topic | Optics Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2310.02610 |