Hearing the light: stray-field noise from the emergent photon in quantum spin ice
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866914205221781504 |
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| author | Naik, Gautam K. Hallén, Jonathan N. Jayarama, Nishan C. Moessner, Roderich Laumann, Chris R. |
| author_facet | Naik, Gautam K. Hallén, Jonathan N. Jayarama, Nishan C. Moessner, Roderich Laumann, Chris R. |
| contents | Decisive experimental confirmation of the $U(1)$ quantum spin liquid phase in quantum spin ice remains an outstanding challenge. In this work, we propose stray-field magnetometry as a direct probe of the emergent photons -- the gapless excitation of the emergent electrodynamics in quantum spin ice. The emergent photons are transverse magnetization waves, which, in a finite sample, form discrete modes governed by one of two sets of natural boundary conditions: ``insulating'' or ``superconducting''. Considering cavity and thin film geometries, we find that the spectrum and spatial structure of the stray magnetic noise provide a sharp qualitative signature of the underlying electrodynamics. The predicted stray-field noise power lies comfortably within the detection range of present-day solid-state defect magnetometry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_14843 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hearing the light: stray-field noise from the emergent photon in quantum spin ice Naik, Gautam K. Hallén, Jonathan N. Jayarama, Nishan C. Moessner, Roderich Laumann, Chris R. Strongly Correlated Electrons Decisive experimental confirmation of the $U(1)$ quantum spin liquid phase in quantum spin ice remains an outstanding challenge. In this work, we propose stray-field magnetometry as a direct probe of the emergent photons -- the gapless excitation of the emergent electrodynamics in quantum spin ice. The emergent photons are transverse magnetization waves, which, in a finite sample, form discrete modes governed by one of two sets of natural boundary conditions: ``insulating'' or ``superconducting''. Considering cavity and thin film geometries, we find that the spectrum and spatial structure of the stray magnetic noise provide a sharp qualitative signature of the underlying electrodynamics. The predicted stray-field noise power lies comfortably within the detection range of present-day solid-state defect magnetometry. |
| title | Hearing the light: stray-field noise from the emergent photon in quantum spin ice |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2512.14843 |