{"paper":{"title":"Near-ultrastrong nonlinear light-matter coupling in superconducting circuits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alec Yen, Alicia Zang, Bethany M. Niedzielski, Gregory Cunningham, Hannah Stickler, Jeremy B. Kline, Kevin P. O'Brien, Kyle Serniak, Max Tan, Michael Gingras, Mollie E. Schwartz, Yufeng Ye","submitted_at":"2024-04-30T01:52:35Z","abstract_excerpt":"The interaction between an atom and an electromagnetic mode of a resonator is of both fundamental interest and is ubiquitous in quantum technologies. Most prior work studies a linear light-matter coupling of the form $g \\widehat{\\sigma}_x (\\widehat{a} + \\widehat{a}^\\dagger)$, where $g$ measured relative to photonic ($\\omega_a$) and atomic ($\\omega_b$) mode frequencies can reach the ultrastrong regime ($g/\\omega_{a}\\!>\\!10^{-1}$). In contrast, a nonlinear light-matter coupling of the form $\\frac{\\chi}{2} \\widehat{\\sigma}_z \\widehat{a}^\\dagger \\widehat{a}$ has the advantage of commuting with the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19199","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.19199/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}