Superradiant Charge Density Waves in a Driven Cavity-Matter Hybrid
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917369354387456 |
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| author | Skolc, Luka Chattopadhyay, Sambuddha Marijanović, Filip Li, Qitong Keeling, Jonathan Lev, Benjamin L. Demler, Eugene |
| author_facet | Skolc, Luka Chattopadhyay, Sambuddha Marijanović, Filip Li, Qitong Keeling, Jonathan Lev, Benjamin L. Demler, Eugene |
| contents | Optical cavities enable strong, long-range, light-matter interactions that can drive collective ordering phenomena, such as superradiant self-organization in ultracold atomic gases. Extending these ideas to solid-state electron systems could enable continuous-wave optical control of electronic order, but is impeded by the mismatch between optical wavelengths and electronic length scales. Here, we propose a platform for realizing superradiant charge density waves (sCDWs) in doped, driven transition-metal dichalcogenides coupled to an optical cavity. A nanoscale grating generates electric fields at large in-plane optical momenta, allowing cavity photons to couple efficiently to electronic density fluctuations through exciton-polaron processes. Using a linear-stability analysis, we determine the threshold for superradiant ordering and map out the driven phase diagram. We show that tuning the grating periodicity to match the enhanced electronic density fluctuations - such as those near Wigner crystallization - substantially lowers the required pump intensity. Our results establish a novel route toward cavity-controlled electronic order in quantum materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_28432 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Superradiant Charge Density Waves in a Driven Cavity-Matter Hybrid Skolc, Luka Chattopadhyay, Sambuddha Marijanović, Filip Li, Qitong Keeling, Jonathan Lev, Benjamin L. Demler, Eugene Strongly Correlated Electrons Quantum Gases Optics Optical cavities enable strong, long-range, light-matter interactions that can drive collective ordering phenomena, such as superradiant self-organization in ultracold atomic gases. Extending these ideas to solid-state electron systems could enable continuous-wave optical control of electronic order, but is impeded by the mismatch between optical wavelengths and electronic length scales. Here, we propose a platform for realizing superradiant charge density waves (sCDWs) in doped, driven transition-metal dichalcogenides coupled to an optical cavity. A nanoscale grating generates electric fields at large in-plane optical momenta, allowing cavity photons to couple efficiently to electronic density fluctuations through exciton-polaron processes. Using a linear-stability analysis, we determine the threshold for superradiant ordering and map out the driven phase diagram. We show that tuning the grating periodicity to match the enhanced electronic density fluctuations - such as those near Wigner crystallization - substantially lowers the required pump intensity. Our results establish a novel route toward cavity-controlled electronic order in quantum materials. |
| title | Superradiant Charge Density Waves in a Driven Cavity-Matter Hybrid |
| topic | Strongly Correlated Electrons Quantum Gases Optics |
| url | https://arxiv.org/abs/2603.28432 |