{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:XV7PQ3CRWSVJPJ3FPJLXXJD54P","short_pith_number":"pith:XV7PQ3CR","canonical_record":{"source":{"id":"1709.03428","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-11T15:13:07Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e9cc91278a0672dac20483312e72bb1f575a3ba08b7b8feae741adff62e1ddbd","abstract_canon_sha256":"e7ba580d9076a1615400124ade9c965be00ec981c211d10023cde091befdffff"},"schema_version":"1.0"},"canonical_sha256":"bd7ef86c51b4aa97a7657a577ba47de3cf3ae52ba82372de69dd000be5946fb6","source":{"kind":"arxiv","id":"1709.03428","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03428","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03428v2","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03428","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"XV7PQ3CRWSVJ","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"XV7PQ3CRWSVJPJ3F","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"XV7PQ3CR","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:XV7PQ3CRWSVJPJ3FPJLXXJD54P","target":"record","payload":{"canonical_record":{"source":{"id":"1709.03428","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-11T15:13:07Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e9cc91278a0672dac20483312e72bb1f575a3ba08b7b8feae741adff62e1ddbd","abstract_canon_sha256":"e7ba580d9076a1615400124ade9c965be00ec981c211d10023cde091befdffff"},"schema_version":"1.0"},"canonical_sha256":"bd7ef86c51b4aa97a7657a577ba47de3cf3ae52ba82372de69dd000be5946fb6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:00.056528Z","signature_b64":"bshEPVSgSxSYYJiD7ZaTsoSgVMoJrw15pbIpp6eqVebVyQ8Trr3ZLxI0HD5cWWQdVTxa1stuROyYW1MLESiKDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd7ef86c51b4aa97a7657a577ba47de3cf3ae52ba82372de69dd000be5946fb6","last_reissued_at":"2026-05-17T23:56:00.055766Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:00.055766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.03428","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i/ZCqI2rSBag2XNEqMSA/SqJXh10YDMQd0CI/MjKmYf32dQ3wxIueJevVZEtP/s6dHElsmYx3IPDJIk1pgJNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:20:01.076053Z"},"content_sha256":"1ae3c0f1c283803b5c95d5238e820e4581a9bcbcaf6e85f6a22655d9e94646d5","schema_version":"1.0","event_id":"sha256:1ae3c0f1c283803b5c95d5238e820e4581a9bcbcaf6e85f6a22655d9e94646d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:XV7PQ3CRWSVJPJ3FPJLXXJD54P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coherent metamaterial absorption of two-photon states with 40% efficiency","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Ashley Lyons, Daniele Faccio, Dikla Oren, Jo\\~ao Valente, Mordechai Segev, Nikolay I. Zheludev, Stefano Vezzoli, Thomas Roger, Vassili Savinov","submitted_at":"2017-09-11T15:13:07Z","abstract_excerpt":"Multi-photon absorption processes have a nonlinear dependence on the amplitude of the incident optical field i.e. the number of photons. However, multi-photon absorption is generally weak and multi-photon events occur with extremely low probability. Consequently, it is extremely challenging to engineer quantum nonlinear devices that operate at the single photon level and the majority of quantum technologies have to rely on single photon interactions. Here, we demonstrate experimentally and theoretically that exploiting coherent absorption of N = 2 N00N states makes it possible to enhance the n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03428","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":""},"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":"2026-05-17T23:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fma+p1Dvj5qwHuevmR33ar639beuBKSpM6XgzwVVUqLVdMp32nVncOZ+hq8g/S8Av4Ki63XQ399xWAxxorjKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:20:01.076640Z"},"content_sha256":"423573a30f889545a29c90715734a927b1ebde6831a70bcbf965f018910f55f0","schema_version":"1.0","event_id":"sha256:423573a30f889545a29c90715734a927b1ebde6831a70bcbf965f018910f55f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/bundle.json","state_url":"https://pith.science/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/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":"2026-05-30T14:20:01Z","links":{"resolver":"https://pith.science/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P","bundle":"https://pith.science/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/bundle.json","state":"https://pith.science/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XV7PQ3CRWSVJPJ3FPJLXXJD54P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XV7PQ3CRWSVJPJ3FPJLXXJD54P","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":"e7ba580d9076a1615400124ade9c965be00ec981c211d10023cde091befdffff","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-11T15:13:07Z","title_canon_sha256":"e9cc91278a0672dac20483312e72bb1f575a3ba08b7b8feae741adff62e1ddbd"},"schema_version":"1.0","source":{"id":"1709.03428","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03428","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03428v2","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03428","created_at":"2026-05-17T23:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"XV7PQ3CRWSVJ","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"XV7PQ3CRWSVJPJ3F","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"XV7PQ3CR","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:423573a30f889545a29c90715734a927b1ebde6831a70bcbf965f018910f55f0","target":"graph","created_at":"2026-05-17T23:56:00Z","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":"Multi-photon absorption processes have a nonlinear dependence on the amplitude of the incident optical field i.e. the number of photons. However, multi-photon absorption is generally weak and multi-photon events occur with extremely low probability. Consequently, it is extremely challenging to engineer quantum nonlinear devices that operate at the single photon level and the majority of quantum technologies have to rely on single photon interactions. Here, we demonstrate experimentally and theoretically that exploiting coherent absorption of N = 2 N00N states makes it possible to enhance the n","authors_text":"Ashley Lyons, Daniele Faccio, Dikla Oren, Jo\\~ao Valente, Mordechai Segev, Nikolay I. Zheludev, Stefano Vezzoli, Thomas Roger, Vassili Savinov","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-11T15:13:07Z","title":"Coherent metamaterial absorption of two-photon states with 40% efficiency"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03428","kind":"arxiv","version":2},"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":"sha256:1ae3c0f1c283803b5c95d5238e820e4581a9bcbcaf6e85f6a22655d9e94646d5","target":"record","created_at":"2026-05-17T23:56:00Z","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":"e7ba580d9076a1615400124ade9c965be00ec981c211d10023cde091befdffff","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-11T15:13:07Z","title_canon_sha256":"e9cc91278a0672dac20483312e72bb1f575a3ba08b7b8feae741adff62e1ddbd"},"schema_version":"1.0","source":{"id":"1709.03428","kind":"arxiv","version":2}},"canonical_sha256":"bd7ef86c51b4aa97a7657a577ba47de3cf3ae52ba82372de69dd000be5946fb6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd7ef86c51b4aa97a7657a577ba47de3cf3ae52ba82372de69dd000be5946fb6","first_computed_at":"2026-05-17T23:56:00.055766Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:00.055766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bshEPVSgSxSYYJiD7ZaTsoSgVMoJrw15pbIpp6eqVebVyQ8Trr3ZLxI0HD5cWWQdVTxa1stuROyYW1MLESiKDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:00.056528Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.03428","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ae3c0f1c283803b5c95d5238e820e4581a9bcbcaf6e85f6a22655d9e94646d5","sha256:423573a30f889545a29c90715734a927b1ebde6831a70bcbf965f018910f55f0"],"state_sha256":"31942c4a4e8604a3ce99e22f391481d05024ad4c4e0d558b5498e4878ed162fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u5xHIetsfq+cEJkxU4RCPb8nNLnSVLPS0UoU9dq+MAHhmn/QekdPEiA5aacJ+WhrNFvd5AE5UqqoINisDpeUBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:20:01.079829Z","bundle_sha256":"c8f023bb6b2884fa1961601263ec2cf787379122ff566df66060eee1887638c6"}}