{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:63NRUKXZCYFLDR27W6SSJTC6WQ","short_pith_number":"pith:63NRUKXZ","canonical_record":{"source":{"id":"2507.01609","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-02T11:23:32Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"d420fc0463e1c7c5fc5e9b9d1337c2af0bb64f821fd7eeb34591280dc546155e","abstract_canon_sha256":"3ba240d4eae2e3c81c10b3eba7bdce9bb21e109d010f93e21b28179c8afcbe7f"},"schema_version":"1.0"},"canonical_sha256":"f6db1a2af9160ab1c75fb7a524cc5eb4154063345e1de995eadd038703abc745","source":{"kind":"arxiv","id":"2507.01609","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.01609","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"arxiv_version","alias_value":"2507.01609v1","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.01609","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_12","alias_value":"63NRUKXZCYFL","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"63NRUKXZCYFLDR27","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"63NRUKXZ","created_at":"2026-07-05T11:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:63NRUKXZCYFLDR27W6SSJTC6WQ","target":"record","payload":{"canonical_record":{"source":{"id":"2507.01609","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-02T11:23:32Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"d420fc0463e1c7c5fc5e9b9d1337c2af0bb64f821fd7eeb34591280dc546155e","abstract_canon_sha256":"3ba240d4eae2e3c81c10b3eba7bdce9bb21e109d010f93e21b28179c8afcbe7f"},"schema_version":"1.0"},"canonical_sha256":"f6db1a2af9160ab1c75fb7a524cc5eb4154063345e1de995eadd038703abc745","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:30:51.829585Z","signature_b64":"0AeNjhtKNGYC+CnJcfGgBFCtU0Bsb1oXWSQ3Ap1YqqGjA3OHfzfFk89hnrrYWjt6oq0YUB6rwz8gHQ10jUbqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6db1a2af9160ab1c75fb7a524cc5eb4154063345e1de995eadd038703abc745","last_reissued_at":"2026-07-05T11:30:51.829093Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:30:51.829093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.01609","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:30:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GbCJqz2v+ugrxVRQ4hXegk9u88O2RYUGukwn53HJfC6UBnH+eqaX36d9Qia1sp9ust0vOmcmb4OlJ0fqlF9iDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:49:25.770272Z"},"content_sha256":"5b676645289882eeff3bf0b3ed73fafccd777f1fe590a85e3daee268a47faaeb","schema_version":"1.0","event_id":"sha256:5b676645289882eeff3bf0b3ed73fafccd777f1fe590a85e3daee268a47faaeb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:63NRUKXZCYFLDR27W6SSJTC6WQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Toward graviton detection via photon-graviton quantum state conversion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"Jiro Soda, Sugumi Kanno, Taiki Ikeda, Youka Kaku","submitted_at":"2025-07-02T11:23:32Z","abstract_excerpt":"A magnetic field enables the interconversion of photons and gravitons, yet the process is usually analysed only at the level of classical wave equations. We revisit photon-graviton conversion in a quantum field theoretic framework, allowing us to track the evolution of arbitrary quantum states. Treating the photons as squeezed coherent states and the gravitons as the squeezed vacuum expected for primordial gravitational waves, we derive analytic expressions for the conversion probability and show that it can be significantly enhanced compared to the conventional estimate. We further demonstrat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.01609","kind":"arxiv","version":1},"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/2507.01609/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:30:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1vp+18sdtzvaQ9wiIKILU5+nl420dQmDqWV/1+rMyAUOapdx5g/qk1TvvAZQA1Ujf0GuTpSijfx0nGK0LOZxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:49:25.770802Z"},"content_sha256":"3926c5fe3c731ede561ffe153b6c073f3b6b61013b258a2f27e4d6af1ccb4976","schema_version":"1.0","event_id":"sha256:3926c5fe3c731ede561ffe153b6c073f3b6b61013b258a2f27e4d6af1ccb4976"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/bundle.json","state_url":"https://pith.science/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-09T23:49:25Z","links":{"resolver":"https://pith.science/pith/63NRUKXZCYFLDR27W6SSJTC6WQ","bundle":"https://pith.science/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/bundle.json","state":"https://pith.science/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/63NRUKXZCYFLDR27W6SSJTC6WQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:63NRUKXZCYFLDR27W6SSJTC6WQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3ba240d4eae2e3c81c10b3eba7bdce9bb21e109d010f93e21b28179c8afcbe7f","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-02T11:23:32Z","title_canon_sha256":"d420fc0463e1c7c5fc5e9b9d1337c2af0bb64f821fd7eeb34591280dc546155e"},"schema_version":"1.0","source":{"id":"2507.01609","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.01609","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"arxiv_version","alias_value":"2507.01609v1","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.01609","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_12","alias_value":"63NRUKXZCYFL","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"63NRUKXZCYFLDR27","created_at":"2026-07-05T11:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"63NRUKXZ","created_at":"2026-07-05T11:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:3926c5fe3c731ede561ffe153b6c073f3b6b61013b258a2f27e4d6af1ccb4976","target":"graph","created_at":"2026-07-05T11:30:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2507.01609/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A magnetic field enables the interconversion of photons and gravitons, yet the process is usually analysed only at the level of classical wave equations. We revisit photon-graviton conversion in a quantum field theoretic framework, allowing us to track the evolution of arbitrary quantum states. Treating the photons as squeezed coherent states and the gravitons as the squeezed vacuum expected for primordial gravitational waves, we derive analytic expressions for the conversion probability and show that it can be significantly enhanced compared to the conventional estimate. We further demonstrat","authors_text":"Jiro Soda, Sugumi Kanno, Taiki Ikeda, Youka Kaku","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-02T11:23:32Z","title":"Toward graviton detection via photon-graviton quantum state conversion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.01609","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5b676645289882eeff3bf0b3ed73fafccd777f1fe590a85e3daee268a47faaeb","target":"record","created_at":"2026-07-05T11:30:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3ba240d4eae2e3c81c10b3eba7bdce9bb21e109d010f93e21b28179c8afcbe7f","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-02T11:23:32Z","title_canon_sha256":"d420fc0463e1c7c5fc5e9b9d1337c2af0bb64f821fd7eeb34591280dc546155e"},"schema_version":"1.0","source":{"id":"2507.01609","kind":"arxiv","version":1}},"canonical_sha256":"f6db1a2af9160ab1c75fb7a524cc5eb4154063345e1de995eadd038703abc745","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6db1a2af9160ab1c75fb7a524cc5eb4154063345e1de995eadd038703abc745","first_computed_at":"2026-07-05T11:30:51.829093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:30:51.829093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0AeNjhtKNGYC+CnJcfGgBFCtU0Bsb1oXWSQ3Ap1YqqGjA3OHfzfFk89hnrrYWjt6oq0YUB6rwz8gHQ10jUbqBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:30:51.829585Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.01609","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b676645289882eeff3bf0b3ed73fafccd777f1fe590a85e3daee268a47faaeb","sha256:3926c5fe3c731ede561ffe153b6c073f3b6b61013b258a2f27e4d6af1ccb4976"],"state_sha256":"e5ea3c69247985c4cc6334ea37412f2675c606b8db290493ff669a65b7347827"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"at+LauW3oCMEbSuVeUQ5NtARcNjU/6jaIWWmN6kPk8ATrt9rA7LTmsBI0Kq/L6ietqdSQSZTbKTG1X5TuoAqCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T23:49:25.776568Z","bundle_sha256":"3e396901afee75c009200936104a2541c1b7942810695892cd297bf5374d766a"}}