{"paper":{"title":"Enabling Deterministic Passive Quantum State Transfer with Giant Atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Giant atoms in 1D waveguides enable deterministic passive quantum state transfer by engineering nonlocal couplings to emit time-symmetric photon wavepackets.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alejandro Gonzalez-Tudela, Carlos Gonzalez-Ballestero, Daniele De Bernardis, Enrico Di Benedetto, Francesco Ciccarello, Nicolas Jungwirth, Oliver Diekmann, Peter Rabl, Stefan Rotter, Zeyu Kuang","submitted_at":"2026-05-12T12:06:28Z","abstract_excerpt":"Achieving quantum state transfer in passive ways can become a powerful asset for scalable quantum networks. Here, we demonstrate how giant atoms coupled to 1D waveguides provide a platform for such a passive, deterministic transfer. Engineering the position and strength of coupling points, we show that the nonlocal interaction can be utilized for the emission of time-reversal-symmetric single-photon wavepackets by spontaneous decay. We first derive general analytical conditions under which arbitrary qubit decays can be mapped to wavevector-dependent couplings that guarantee perfect state trans"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We first derive general analytical conditions under which arbitrary qubit decays can be mapped to wavevector-dependent couplings that guarantee perfect state transfer in the continuum limit of infinitely many coupling points. Then, for experimentally relevant configurations with a finite number of coupling points, we demonstrate that high transfer fidelities can still be achieved by optimization, reaching 87% with only two coupling points and exceeding 99% with ten or more.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the nonlocal interaction engineered via finite coupling points can be optimized to produce sufficiently time-reversal-symmetric wavepackets for high-fidelity transfer, without post-hoc data selection or unstated constraints on the optimization landscape.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Giant atoms in waveguides enable high-fidelity passive quantum state transfer via optimized nonlocal couplings, reaching 87% with two points and over 99% with ten or more.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Giant atoms in 1D waveguides enable deterministic passive quantum state transfer by engineering nonlocal couplings to emit time-symmetric photon wavepackets.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"533640ba18adfd282f1894474533255f105f32187192c13170f62cc3c9c1abca"},"source":{"id":"2605.12018","kind":"arxiv","version":2},"verdict":{"id":"da8e1b4c-1c0c-4512-b67f-7937d82adeae","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-13T05:01:56.161025Z","strongest_claim":"We first derive general analytical conditions under which arbitrary qubit decays can be mapped to wavevector-dependent couplings that guarantee perfect state transfer in the continuum limit of infinitely many coupling points. Then, for experimentally relevant configurations with a finite number of coupling points, we demonstrate that high transfer fidelities can still be achieved by optimization, reaching 87% with only two coupling points and exceeding 99% with ten or more.","one_line_summary":"Giant atoms in waveguides enable high-fidelity passive quantum state transfer via optimized nonlocal couplings, reaching 87% with two points and over 99% with ten or more.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the nonlocal interaction engineered via finite coupling points can be optimized to produce sufficiently time-reversal-symmetric wavepackets for high-fidelity transfer, without post-hoc data selection or unstated constraints on the optimization landscape.","pith_extraction_headline":"Giant atoms in 1D waveguides enable deterministic passive quantum state transfer by engineering nonlocal couplings to emit time-symmetric photon wavepackets."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.12018/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-26T15:44:32.762999Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-20T17:31:26.519769Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-20T11:45:23.124778Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-20T03:22:00.074382Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"90e4527e3276171239add652cf80ff96fa2981cbe989846675359836b5860878"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"ca23f12e88febd5338b3d514e32fae54b3deb59d9cae5e30ccd1f0389727034a"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}