Multi-state Chiral Switching Through Adiabaticity Control in Encircling Exceptional Points
Dynamic encircling of exceptional points has attracted significant interest in recent years, as it can facilitate chiral transmission selectivity due to a nontrivial eigenstate evolution. Recently, multi-state systems have been explored, associated with more complex topologies supporting a larger nu...
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Language | English |
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04.06.2024
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Abstract | Dynamic encircling of exceptional points has attracted significant interest
in recent years, as it can facilitate chiral transmission selectivity due to a
nontrivial eigenstate evolution. Recently, multi-state systems have been
explored, associated with more complex topologies supporting a larger number of
exceptional points, but chiral switching among multiple eigenstates has
remained elusive in experiments. Here, we overcome this challenge by dividing
the eigenstate space into multiple subspaces by controlling the adiabaticity.
The eigenstates in different subspaces can evolve without crosstalk, and chiral
switching occurs as the eigenstates within each subspace are subject to a
non-adiabatic transition while they encircle exceptional points. We
experimentally demonstrate this phenomenon by reporting chiral switching for
two groups of optical modes at telecom wavelengths in a four-state optical
system, and theoretically demonstrate that our approach can be extended to
higher-order systems. Our findings pave new avenues for studying chiral
dynamics based on exceptional-point physics in multi-state systems, and offer
opportunities to develop multiplexed photonic devices. |
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AbstractList | Dynamic encircling of exceptional points has attracted significant interest
in recent years, as it can facilitate chiral transmission selectivity due to a
nontrivial eigenstate evolution. Recently, multi-state systems have been
explored, associated with more complex topologies supporting a larger number of
exceptional points, but chiral switching among multiple eigenstates has
remained elusive in experiments. Here, we overcome this challenge by dividing
the eigenstate space into multiple subspaces by controlling the adiabaticity.
The eigenstates in different subspaces can evolve without crosstalk, and chiral
switching occurs as the eigenstates within each subspace are subject to a
non-adiabatic transition while they encircle exceptional points. We
experimentally demonstrate this phenomenon by reporting chiral switching for
two groups of optical modes at telecom wavelengths in a four-state optical
system, and theoretically demonstrate that our approach can be extended to
higher-order systems. Our findings pave new avenues for studying chiral
dynamics based on exceptional-point physics in multi-state systems, and offer
opportunities to develop multiplexed photonic devices. |
Author | Wang, Jian Li, Aodong Chen, Lin Alù, Andrea |
Author_xml | – sequence: 1 givenname: Aodong surname: Li fullname: Li, Aodong – sequence: 2 givenname: Jian surname: Wang fullname: Wang, Jian – sequence: 3 givenname: Andrea surname: Alù fullname: Alù, Andrea – sequence: 4 givenname: Lin surname: Chen fullname: Chen, Lin |
BackLink | https://doi.org/10.48550/arXiv.2406.02093$$DView paper in arXiv |
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Snippet | Dynamic encircling of exceptional points has attracted significant interest
in recent years, as it can facilitate chiral transmission selectivity due to a... |
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SubjectTerms | Physics - Optics |
Title | Multi-state Chiral Switching Through Adiabaticity Control in Encircling Exceptional Points |
URI | https://arxiv.org/abs/2406.02093 |
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