Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media
Abstract Metasurface-programmable radio environments are considered a key ingredient of next-generation wireless networks. Yet, identifying a metasurface configuration that yields a desired wireless functionality in an unknown complex environment was so far only achieved with closed-loop iterative f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-46916-2 |
| _version_ | 1827291470248280064 |
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| author | Jérôme Sol Hugo Prod’homme Luc Le Magoarou Philipp del Hougne |
| author_facet | Jérôme Sol Hugo Prod’homme Luc Le Magoarou Philipp del Hougne |
| author_sort | Jérôme Sol |
| collection | DOAJ |
| description | Abstract Metasurface-programmable radio environments are considered a key ingredient of next-generation wireless networks. Yet, identifying a metasurface configuration that yields a desired wireless functionality in an unknown complex environment was so far only achieved with closed-loop iterative feedback schemes. Here, we introduce open-loop wave control in metasurface-programmable complex media by estimating the parameters of a compact physics-based forward model. Our experiments demonstrate orders-of-magnitude advantages over deep-learning-based digital-twin benchmarks in terms of accuracy, compactness and required calibration examples. Strikingly, our parameter estimation also works without phase information and without providing measurements for all considered scattering coefficients. These unique generalization capabilities of our pure-physics model unlock unforeseen and previously inaccessible frugal wave control protocols that significantly alleviate the measurement complexity. For instance, we achieve coherent wave control (focusing or perfect absorption) and phase-shift-keying backscatter communications in metasurface-programmable complex media with intensity-only measurements. Our approach is also directly relevant to dynamic metasurface antennas, microwave-based signal processors and emerging in situ reconfigurable nanophotonic, optical and room-acoustical systems. |
| first_indexed | 2024-04-24T12:38:36Z |
| format | Article |
| id | doaj.art-a537a8544db041388ee8a343327786b8 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-24T12:38:36Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-a537a8544db041388ee8a343327786b82024-04-07T11:23:52ZengNature PortfolioNature Communications2041-17232024-04-0115111110.1038/s41467-024-46916-2Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex mediaJérôme Sol0Hugo Prod’homme1Luc Le Magoarou2Philipp del Hougne3Univ Rennes, INSA Rennes, CNRS, IETR - UMR 6164Univ Rennes, INSA Rennes, CNRS, IETR - UMR 6164Univ Rennes, INSA Rennes, CNRS, IETR - UMR 6164Univ Rennes, INSA Rennes, CNRS, IETR - UMR 6164Abstract Metasurface-programmable radio environments are considered a key ingredient of next-generation wireless networks. Yet, identifying a metasurface configuration that yields a desired wireless functionality in an unknown complex environment was so far only achieved with closed-loop iterative feedback schemes. Here, we introduce open-loop wave control in metasurface-programmable complex media by estimating the parameters of a compact physics-based forward model. Our experiments demonstrate orders-of-magnitude advantages over deep-learning-based digital-twin benchmarks in terms of accuracy, compactness and required calibration examples. Strikingly, our parameter estimation also works without phase information and without providing measurements for all considered scattering coefficients. These unique generalization capabilities of our pure-physics model unlock unforeseen and previously inaccessible frugal wave control protocols that significantly alleviate the measurement complexity. For instance, we achieve coherent wave control (focusing or perfect absorption) and phase-shift-keying backscatter communications in metasurface-programmable complex media with intensity-only measurements. Our approach is also directly relevant to dynamic metasurface antennas, microwave-based signal processors and emerging in situ reconfigurable nanophotonic, optical and room-acoustical systems.https://doi.org/10.1038/s41467-024-46916-2 |
| spellingShingle | Jérôme Sol Hugo Prod’homme Luc Le Magoarou Philipp del Hougne Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media Nature Communications |
| title | Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media |
| title_full | Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media |
| title_fullStr | Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media |
| title_full_unstemmed | Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media |
| title_short | Experimentally realized physical-model-based frugal wave control in metasurface-programmable complex media |
| title_sort | experimentally realized physical model based frugal wave control in metasurface programmable complex media |
| url | https://doi.org/10.1038/s41467-024-46916-2 |
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