{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CXAAL4ZAVLLWHW3W4TIZCV3IWT","short_pith_number":"pith:CXAAL4ZA","canonical_record":{"source":{"id":"1505.05217","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-05-20T00:51:26Z","cross_cats_sorted":["physics.optics","quant-ph"],"title_canon_sha256":"dbb480e346eccfa16e816f56ea5f0517df017f1413f7b5b14bdc4126ae70c13b","abstract_canon_sha256":"a9aefff07072cdb2f28b1d16d1eacc7f633c5f67c78dca464af3057cff5824de"},"schema_version":"1.0"},"canonical_sha256":"15c005f320aad763db76e4d1915768b4cabf5800ccae3879132ad2c7ca5763ef","source":{"kind":"arxiv","id":"1505.05217","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.05217","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"arxiv_version","alias_value":"1505.05217v1","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05217","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"pith_short_12","alias_value":"CXAAL4ZAVLLW","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CXAAL4ZAVLLWHW3W","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CXAAL4ZA","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CXAAL4ZAVLLWHW3W4TIZCV3IWT","target":"record","payload":{"canonical_record":{"source":{"id":"1505.05217","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-05-20T00:51:26Z","cross_cats_sorted":["physics.optics","quant-ph"],"title_canon_sha256":"dbb480e346eccfa16e816f56ea5f0517df017f1413f7b5b14bdc4126ae70c13b","abstract_canon_sha256":"a9aefff07072cdb2f28b1d16d1eacc7f633c5f67c78dca464af3057cff5824de"},"schema_version":"1.0"},"canonical_sha256":"15c005f320aad763db76e4d1915768b4cabf5800ccae3879132ad2c7ca5763ef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:59.050154Z","signature_b64":"1Azo95zMWmQ1CvFS1DWdUp+OEZR67WGOpgXJgIKoQMyYyToP14ijcJcyixZiCUoC/za54xiyxvDhSlOPMkIaBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15c005f320aad763db76e4d1915768b4cabf5800ccae3879132ad2c7ca5763ef","last_reissued_at":"2026-05-18T02:03:59.049430Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:59.049430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.05217","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":"2026-05-18T02:03:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EYLEOz1RJCIxo6h/oIcOS3iS0rrrfJhgaEPktoEVoXlpOvxPQ7MO8mNVSs7pvegjWtfMEDPRhW3tbpjBUozZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:53.613196Z"},"content_sha256":"5527e11c31fdb40a5c3674ee14eef076f028da417ac28cb0aa2b4bc6e5a02b64","schema_version":"1.0","event_id":"sha256:5527e11c31fdb40a5c3674ee14eef076f028da417ac28cb0aa2b4bc6e5a02b64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CXAAL4ZAVLLWHW3W4TIZCV3IWT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modulation-assisted tunneling in laser-fabricated photonic Wannier-Stark ladders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Alexander Spracklen, Debaditya Choudhury, Erika Andersson, Nathan Goldman, Patrik \\\"Ohberg, Robert R. Thomson, Sebabrata Mukherjee","submitted_at":"2015-05-20T00:51:26Z","abstract_excerpt":"We observe Wannier-Stark localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site coupling in the lattice, we observe that Wannier-Stark states become increasingly localized, and eventually fully localized to one site, as the curvature of the lattice is increased. We then demonstrate that tunneling can be successfully restored in the lattice by applying a sinusoidal modulation to the lattice position, an effect that is a direct analogue of photon-assisted tunneling. This precise tuning of the tunn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05217","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":""},"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":"2026-05-18T02:03:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RjF53zPl+aZWLmftpRw8+raonuU9o7oDpadc6U3hqAW3HjUShpBicyIEjbsCJeyRGNRwl9+sKxyMMVBCcXtdBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:53.613598Z"},"content_sha256":"ab713312d4b9f9523ef3f6b818050a8f9f458dbb70c6d278c97230bcbeb46010","schema_version":"1.0","event_id":"sha256:ab713312d4b9f9523ef3f6b818050a8f9f458dbb70c6d278c97230bcbeb46010"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/bundle.json","state_url":"https://pith.science/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/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":"2026-05-25T17:38:53Z","links":{"resolver":"https://pith.science/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT","bundle":"https://pith.science/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/bundle.json","state":"https://pith.science/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXAAL4ZAVLLWHW3W4TIZCV3IWT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CXAAL4ZAVLLWHW3W4TIZCV3IWT","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":"a9aefff07072cdb2f28b1d16d1eacc7f633c5f67c78dca464af3057cff5824de","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-05-20T00:51:26Z","title_canon_sha256":"dbb480e346eccfa16e816f56ea5f0517df017f1413f7b5b14bdc4126ae70c13b"},"schema_version":"1.0","source":{"id":"1505.05217","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.05217","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"arxiv_version","alias_value":"1505.05217v1","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05217","created_at":"2026-05-18T02:03:59Z"},{"alias_kind":"pith_short_12","alias_value":"CXAAL4ZAVLLW","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CXAAL4ZAVLLWHW3W","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CXAAL4ZA","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:ab713312d4b9f9523ef3f6b818050a8f9f458dbb70c6d278c97230bcbeb46010","target":"graph","created_at":"2026-05-18T02:03:59Z","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"},"paper":{"abstract_excerpt":"We observe Wannier-Stark localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site coupling in the lattice, we observe that Wannier-Stark states become increasingly localized, and eventually fully localized to one site, as the curvature of the lattice is increased. We then demonstrate that tunneling can be successfully restored in the lattice by applying a sinusoidal modulation to the lattice position, an effect that is a direct analogue of photon-assisted tunneling. This precise tuning of the tunn","authors_text":"Alexander Spracklen, Debaditya Choudhury, Erika Andersson, Nathan Goldman, Patrik \\\"Ohberg, Robert R. Thomson, Sebabrata Mukherjee","cross_cats":["physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-05-20T00:51:26Z","title":"Modulation-assisted tunneling in laser-fabricated photonic Wannier-Stark ladders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05217","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":"sha256:5527e11c31fdb40a5c3674ee14eef076f028da417ac28cb0aa2b4bc6e5a02b64","target":"record","created_at":"2026-05-18T02:03:59Z","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":"a9aefff07072cdb2f28b1d16d1eacc7f633c5f67c78dca464af3057cff5824de","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-05-20T00:51:26Z","title_canon_sha256":"dbb480e346eccfa16e816f56ea5f0517df017f1413f7b5b14bdc4126ae70c13b"},"schema_version":"1.0","source":{"id":"1505.05217","kind":"arxiv","version":1}},"canonical_sha256":"15c005f320aad763db76e4d1915768b4cabf5800ccae3879132ad2c7ca5763ef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15c005f320aad763db76e4d1915768b4cabf5800ccae3879132ad2c7ca5763ef","first_computed_at":"2026-05-18T02:03:59.049430Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:59.049430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1Azo95zMWmQ1CvFS1DWdUp+OEZR67WGOpgXJgIKoQMyYyToP14ijcJcyixZiCUoC/za54xiyxvDhSlOPMkIaBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:59.050154Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.05217","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5527e11c31fdb40a5c3674ee14eef076f028da417ac28cb0aa2b4bc6e5a02b64","sha256:ab713312d4b9f9523ef3f6b818050a8f9f458dbb70c6d278c97230bcbeb46010"],"state_sha256":"edb4838529947ec4cedd21e88fee43b2e3fcf856c7dd469a4b5a694991eb8162"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yyYCy5JQoWuZiz7LW4kO6vkJrMIEwjW41gZFphJTx09uLJZe7UIDtN+HmTN1koNG2Hm/Bm9QIUjiPiuB6UidAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:38:53.616016Z","bundle_sha256":"9d2cc09fb5cae9df904ba7d7572e63e44a1bdfc3a9781193d8e0fd4e83d57b59"}}