{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:6ZEHQGO2PT7GNLRBTJQ3V3FSEM","short_pith_number":"pith:6ZEHQGO2","canonical_record":{"source":{"id":"1406.6165","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-24T08:21:49Z","cross_cats_sorted":[],"title_canon_sha256":"10a78e7b1fa4ebfd09920710d02a5a02317dc56c68edbb49bdd6f1e1cc21c395","abstract_canon_sha256":"f46640bf4589377110697482f7b71cc3b24a5dcbdc1519cec515159499c201cc"},"schema_version":"1.0"},"canonical_sha256":"f6487819da7cfe66ae219a61baecb2230c0c627259875b2fdf4b64b43aa820f1","source":{"kind":"arxiv","id":"1406.6165","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6165","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6165v1","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6165","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"6ZEHQGO2PT7G","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6ZEHQGO2PT7GNLRB","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6ZEHQGO2","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:6ZEHQGO2PT7GNLRBTJQ3V3FSEM","target":"record","payload":{"canonical_record":{"source":{"id":"1406.6165","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-24T08:21:49Z","cross_cats_sorted":[],"title_canon_sha256":"10a78e7b1fa4ebfd09920710d02a5a02317dc56c68edbb49bdd6f1e1cc21c395","abstract_canon_sha256":"f46640bf4589377110697482f7b71cc3b24a5dcbdc1519cec515159499c201cc"},"schema_version":"1.0"},"canonical_sha256":"f6487819da7cfe66ae219a61baecb2230c0c627259875b2fdf4b64b43aa820f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:03.951830Z","signature_b64":"JxRfpkF4mMCxXsZIUj+zR7IG0IXPfg9erJkUYPMkoD33GbgkplWKD27gW1lNe+6XtIXZVXllAq8CasTAXQtuAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6487819da7cfe66ae219a61baecb2230c0c627259875b2fdf4b64b43aa820f1","last_reissued_at":"2026-05-18T02:49:03.951367Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:03.951367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.6165","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":"2026-05-18T02:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yfKZ/j6PzOle/s3fu/BhHkTY+a9g3k9kR4rV0RCvQUo2v3TEn9E8fp5gZTFAkPCOT2JK6hptetA5cUL6wFGQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T13:47:19.595179Z"},"content_sha256":"e41ea5a0bb4773f09a492688c75d9fa530c243b79024cb3dc6c2bccd9f5cebf3","schema_version":"1.0","event_id":"sha256:e41ea5a0bb4773f09a492688c75d9fa530c243b79024cb3dc6c2bccd9f5cebf3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:6ZEHQGO2PT7GNLRBTJQ3V3FSEM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entangling time-bin qubits with a switch","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hiroki Takesue","submitted_at":"2014-06-24T08:21:49Z","abstract_excerpt":"A time-bin qubit is a promising candidate qubit for advanced quantum information processing systems operating over optical fibers or integrated quantum photonic circuits. However, the single- and two-qubit operations of time-bin qubits have been largely unexplored compared with those of polarization qubits. Here, I present a simple scheme for implementing a basic two-qubit operation, namely an \"entangling\" operation of two independent time-bin qubits, based on Hong-Ou-Mandel quantum interference in a high-speed 2x2 optical switch. With the proposed scheme, the formation of a time-bin entanglem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6165","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":"2026-05-18T02:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z00Zs56+389UeI520Mt1UNl7RSIArtw5seGWpt3dnrB9KwKDK/Vp5ivXwclR58djtPtdn29ObTcA11tV4YhoAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T13:47:19.595541Z"},"content_sha256":"ca320904874c48aaeac8e48778c7c69fb1e74d74793fa7093b11d3135f447e55","schema_version":"1.0","event_id":"sha256:ca320904874c48aaeac8e48778c7c69fb1e74d74793fa7093b11d3135f447e55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/bundle.json","state_url":"https://pith.science/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/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":"2026-06-24T13:47:19Z","links":{"resolver":"https://pith.science/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM","bundle":"https://pith.science/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/bundle.json","state":"https://pith.science/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZEHQGO2PT7GNLRBTJQ3V3FSEM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:6ZEHQGO2PT7GNLRBTJQ3V3FSEM","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":"f46640bf4589377110697482f7b71cc3b24a5dcbdc1519cec515159499c201cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-24T08:21:49Z","title_canon_sha256":"10a78e7b1fa4ebfd09920710d02a5a02317dc56c68edbb49bdd6f1e1cc21c395"},"schema_version":"1.0","source":{"id":"1406.6165","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6165","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6165v1","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6165","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"6ZEHQGO2PT7G","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6ZEHQGO2PT7GNLRB","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6ZEHQGO2","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:ca320904874c48aaeac8e48778c7c69fb1e74d74793fa7093b11d3135f447e55","target":"graph","created_at":"2026-05-18T02:49:03Z","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":"A time-bin qubit is a promising candidate qubit for advanced quantum information processing systems operating over optical fibers or integrated quantum photonic circuits. However, the single- and two-qubit operations of time-bin qubits have been largely unexplored compared with those of polarization qubits. Here, I present a simple scheme for implementing a basic two-qubit operation, namely an \"entangling\" operation of two independent time-bin qubits, based on Hong-Ou-Mandel quantum interference in a high-speed 2x2 optical switch. With the proposed scheme, the formation of a time-bin entanglem","authors_text":"Hiroki Takesue","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-24T08:21:49Z","title":"Entangling time-bin qubits with a switch"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6165","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:e41ea5a0bb4773f09a492688c75d9fa530c243b79024cb3dc6c2bccd9f5cebf3","target":"record","created_at":"2026-05-18T02:49:03Z","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":"f46640bf4589377110697482f7b71cc3b24a5dcbdc1519cec515159499c201cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-24T08:21:49Z","title_canon_sha256":"10a78e7b1fa4ebfd09920710d02a5a02317dc56c68edbb49bdd6f1e1cc21c395"},"schema_version":"1.0","source":{"id":"1406.6165","kind":"arxiv","version":1}},"canonical_sha256":"f6487819da7cfe66ae219a61baecb2230c0c627259875b2fdf4b64b43aa820f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6487819da7cfe66ae219a61baecb2230c0c627259875b2fdf4b64b43aa820f1","first_computed_at":"2026-05-18T02:49:03.951367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:03.951367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JxRfpkF4mMCxXsZIUj+zR7IG0IXPfg9erJkUYPMkoD33GbgkplWKD27gW1lNe+6XtIXZVXllAq8CasTAXQtuAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:03.951830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.6165","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e41ea5a0bb4773f09a492688c75d9fa530c243b79024cb3dc6c2bccd9f5cebf3","sha256:ca320904874c48aaeac8e48778c7c69fb1e74d74793fa7093b11d3135f447e55"],"state_sha256":"5aa0b2bf951442240d6716cbb49ef274a8bc9bdd461c298e88510817cc2d33a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oqfTTlvt+mZMjNPqypyraXDwJiShglXl2ks/oPbyzsYxyDOEmeL20Peb3TXr5YYbJwhXPdTBdQTzYGcpEMMdCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T13:47:19.597540Z","bundle_sha256":"f47ce5bf822a5f35bf458eac792bf466e26d4b4dae9ae8f8d50d048ec9101c81"}}