{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YNASP5KEE6C6RS54YG7FW6WZEZ","short_pith_number":"pith:YNASP5KE","canonical_record":{"source":{"id":"1812.07015","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-17T19:33:14Z","cross_cats_sorted":[],"title_canon_sha256":"0dd48af26557096b78dd02fd24c2d36f83567d9ac09bc2c20955b958a6be4a94","abstract_canon_sha256":"9951a802ab1cc1dce46b3bff4baaec489bfda2b16fde288253e3ee03ad799768"},"schema_version":"1.0"},"canonical_sha256":"c34127f5442785e8cbbcc1be5b7ad92668f33b673b2160f7a74133fea8a25c03","source":{"kind":"arxiv","id":"1812.07015","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07015","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07015v1","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07015","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"YNASP5KEE6C6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YNASP5KEE6C6RS54","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YNASP5KE","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YNASP5KEE6C6RS54YG7FW6WZEZ","target":"record","payload":{"canonical_record":{"source":{"id":"1812.07015","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-17T19:33:14Z","cross_cats_sorted":[],"title_canon_sha256":"0dd48af26557096b78dd02fd24c2d36f83567d9ac09bc2c20955b958a6be4a94","abstract_canon_sha256":"9951a802ab1cc1dce46b3bff4baaec489bfda2b16fde288253e3ee03ad799768"},"schema_version":"1.0"},"canonical_sha256":"c34127f5442785e8cbbcc1be5b7ad92668f33b673b2160f7a74133fea8a25c03","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:08.212902Z","signature_b64":"i0DtsGQ0JY8+zIeBG3cMOUKLoGkKUr0tzwpbOVo4FXHbh69dKOg1kq6EBl1+gecilMijR1Rlnx24dRLvaNIWAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c34127f5442785e8cbbcc1be5b7ad92668f33b673b2160f7a74133fea8a25c03","last_reissued_at":"2026-05-17T23:58:08.212260Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:08.212260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.07015","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":"2026-05-17T23:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eDk+wUWUdrQrI5GLD359oD8tYEVGexIxisx+cc87NWAlIJclrEwNyqeWuIQN0s7/rb9euwfNYKRiP8ub6E6ADQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:53:03.487513Z"},"content_sha256":"6257b02dde6c593d54162da98f4816a291991a03f5d23603b121de132cb5fbfd","schema_version":"1.0","event_id":"sha256:6257b02dde6c593d54162da98f4816a291991a03f5d23603b121de132cb5fbfd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YNASP5KEE6C6RS54YG7FW6WZEZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Linear multiport photonic interferometers: loss analysis of temporally-encoded architectures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daiqin Su, Haoyu Qi, Kamil Br\\'adler, Lukas G. Helt, Zachary Vernon","submitted_at":"2018-12-17T19:33:14Z","abstract_excerpt":"Implementing spatially-encoded universal linear multiport interferometers on integrated photonic platforms with high controllability becomes increasingly difficult as the number of modes increases. In this work, we consider an architecture in which temporally-encoded modes are injected into a chain of reconfigurable beamsplitters and delay loops, and provide a detailed loss analysis for this and other comparable architectures. This analysis also yields a straightforward and explicit description of the control sequence needed for implementing an arbitrary temporally-encoded transformation. We c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07015","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":"2026-05-17T23:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0HhR0Wyxensze8NuT7jBJhNbIYfQlEbQ2VOZTcu1FVNlPa34HwjEjUko+McE/U1Kk3+Uvzto0+UR2ap8Jb3NBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:53:03.487860Z"},"content_sha256":"41cca89272420c55abb6575c45bb2df37bf775d750b8470c34ace18a9ae395f7","schema_version":"1.0","event_id":"sha256:41cca89272420c55abb6575c45bb2df37bf775d750b8470c34ace18a9ae395f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/bundle.json","state_url":"https://pith.science/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/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":"2026-06-02T15:53:03Z","links":{"resolver":"https://pith.science/pith/YNASP5KEE6C6RS54YG7FW6WZEZ","bundle":"https://pith.science/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/bundle.json","state":"https://pith.science/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YNASP5KEE6C6RS54YG7FW6WZEZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YNASP5KEE6C6RS54YG7FW6WZEZ","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":"9951a802ab1cc1dce46b3bff4baaec489bfda2b16fde288253e3ee03ad799768","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-17T19:33:14Z","title_canon_sha256":"0dd48af26557096b78dd02fd24c2d36f83567d9ac09bc2c20955b958a6be4a94"},"schema_version":"1.0","source":{"id":"1812.07015","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07015","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07015v1","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07015","created_at":"2026-05-17T23:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"YNASP5KEE6C6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YNASP5KEE6C6RS54","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YNASP5KE","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:41cca89272420c55abb6575c45bb2df37bf775d750b8470c34ace18a9ae395f7","target":"graph","created_at":"2026-05-17T23:58:08Z","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":"Implementing spatially-encoded universal linear multiport interferometers on integrated photonic platforms with high controllability becomes increasingly difficult as the number of modes increases. In this work, we consider an architecture in which temporally-encoded modes are injected into a chain of reconfigurable beamsplitters and delay loops, and provide a detailed loss analysis for this and other comparable architectures. This analysis also yields a straightforward and explicit description of the control sequence needed for implementing an arbitrary temporally-encoded transformation. We c","authors_text":"Daiqin Su, Haoyu Qi, Kamil Br\\'adler, Lukas G. Helt, Zachary Vernon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-17T19:33:14Z","title":"Linear multiport photonic interferometers: loss analysis of temporally-encoded architectures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07015","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":"sha256:6257b02dde6c593d54162da98f4816a291991a03f5d23603b121de132cb5fbfd","target":"record","created_at":"2026-05-17T23:58:08Z","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":"9951a802ab1cc1dce46b3bff4baaec489bfda2b16fde288253e3ee03ad799768","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-17T19:33:14Z","title_canon_sha256":"0dd48af26557096b78dd02fd24c2d36f83567d9ac09bc2c20955b958a6be4a94"},"schema_version":"1.0","source":{"id":"1812.07015","kind":"arxiv","version":1}},"canonical_sha256":"c34127f5442785e8cbbcc1be5b7ad92668f33b673b2160f7a74133fea8a25c03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c34127f5442785e8cbbcc1be5b7ad92668f33b673b2160f7a74133fea8a25c03","first_computed_at":"2026-05-17T23:58:08.212260Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:08.212260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i0DtsGQ0JY8+zIeBG3cMOUKLoGkKUr0tzwpbOVo4FXHbh69dKOg1kq6EBl1+gecilMijR1Rlnx24dRLvaNIWAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:08.212902Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.07015","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6257b02dde6c593d54162da98f4816a291991a03f5d23603b121de132cb5fbfd","sha256:41cca89272420c55abb6575c45bb2df37bf775d750b8470c34ace18a9ae395f7"],"state_sha256":"55dce06c3eab10d0c5a2f2611de2189567e1469013883195134195ce0d57e8b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9fuvuaSVLLpG9Io0NZbM2UehMpxxz74OJKBMDVzxEkwAkvvj68IMY7B+suML1sfuPxRF7ghd5biUo+8zMYcNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T15:53:03.489776Z","bundle_sha256":"1c2d27c2d037635660c7525e5615add9b9766013b53814c6d6faaaac70ed8981"}}