Quantum geometry and nanophotonic enriched nonlinear photoresponse in van der Waals materials
The quantum geometry of Bloch wavefunctions is a fundamental property of quantum materials that can have a profound impact on its response. I will discuss how quantum geometry can strongly modulate nonlinear optical responses such as photocurrents, enabling a novel macroscopic probe for atomic confi...
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| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/163300 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The quantum geometry of Bloch wavefunctions is a fundamental property of quantum materials that can have a profound impact on its response. I will discuss how quantum geometry can strongly modulate nonlinear optical responses such as photocurrents, enabling a novel macroscopic probe for atomic configuration in van der Waals homostructures. I will also discuss how nonlinear photoresponse can be greatly enriched by nanophotonic technologies via interaction with highly confined photonic/polaritonic modes. Such nonlinear light-matter interactions can enable the probing of momentum-resolved quantum geometry using photocurrents as well as sustain new dynamical phases of matter that have no simple analogue in equilibrium. |
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