Oğulcan Örsel on Muck Rack

Oğulcan Örsel

As seen in: Science Magazine, Physical Review B
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Articles

Giant Nonreciprocity and Gyration through Modulation-Induced Hatano-Nelson Coupling in Integrated Photonics

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By Oğulcan Örsel, Jiho Noh, Penghao Zhu, Jieun Yim
| Physical Review B
Asymmetric energy exchange interactions, also known as Hatano-Nelson type couplings, enable the study of non-Hermitian physics and associated phenomena like the non-Hermitian skin effect and exceptional points (EPs). Since these interactions are by definition nonreciprocal, there have been very few options for implementations in integrated photonics. In this work, we show that asymmetric couplings are readily achievable in integrated photonic systems through time-domain dynamic modulation.
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