{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZJNRKE3M64YOJNIXONURRRMSGB","short_pith_number":"pith:ZJNRKE3M","canonical_record":{"source":{"id":"1206.3638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-16T07:45:48Z","cross_cats_sorted":[],"title_canon_sha256":"7d0311bdd967e8e1e5c6b3f55bf3d6a22201dc9aaf47dfe6467ba09cc57b5a2d","abstract_canon_sha256":"3d825875739f19649ae923cb63b5d3892176f8facbd1e02e3c7d000e391e511c"},"schema_version":"1.0"},"canonical_sha256":"ca5b15136cf730e4b517736918c59230404481795cd0372a3a5638d7733d1840","source":{"kind":"arxiv","id":"1206.3638","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.3638","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"arxiv_version","alias_value":"1206.3638v1","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.3638","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"pith_short_12","alias_value":"ZJNRKE3M64YO","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZJNRKE3M64YOJNIX","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZJNRKE3M","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZJNRKE3M64YOJNIXONURRRMSGB","target":"record","payload":{"canonical_record":{"source":{"id":"1206.3638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-16T07:45:48Z","cross_cats_sorted":[],"title_canon_sha256":"7d0311bdd967e8e1e5c6b3f55bf3d6a22201dc9aaf47dfe6467ba09cc57b5a2d","abstract_canon_sha256":"3d825875739f19649ae923cb63b5d3892176f8facbd1e02e3c7d000e391e511c"},"schema_version":"1.0"},"canonical_sha256":"ca5b15136cf730e4b517736918c59230404481795cd0372a3a5638d7733d1840","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:53:19.282368Z","signature_b64":"re/geUhkiGp1/RsnqXx3XsN13ZolIGygWiUdaDUwxzt22byGe8T725p5SUf1r0BuK/aDLctNYstsEoc0MsQiBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca5b15136cf730e4b517736918c59230404481795cd0372a3a5638d7733d1840","last_reissued_at":"2026-05-18T03:53:19.281686Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:53:19.281686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.3638","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":"2026-05-18T03:53:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4lHzy19gFxD++2898H11QgPj0Wfg1ouyiC2ADfYPAfI7SLUhuFl8aSrvujhVanv4fHzl3cqgDYlDGG2/3ETXAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:30:47.646547Z"},"content_sha256":"2b5a38fbeb6b4ca9a0924849975cde5e761dd452d23b73f979482dae36e8488a","schema_version":"1.0","event_id":"sha256:2b5a38fbeb6b4ca9a0924849975cde5e761dd452d23b73f979482dae36e8488a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZJNRKE3M64YOJNIXONURRRMSGB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coherent Feedback Control of Linear Quantum Optical Systems via Squeezing and Phase Shift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bo Huang, Guofeng Zhang, Heung Wing Joseph Lee, Hu Zhang","submitted_at":"2012-06-16T07:45:48Z","abstract_excerpt":"The purpose of this paper is to present a theoretic and numerical study of utilizing squeezing and phase shift in coherent feedback control of linear quantum optical systems. A quadrature representation with built-in phase shifters is proposed for such systems. Fundamental structural characterizations of linear quantum optical systems are derived in terms of the new quadrature representation. These results reveal considerable insights of issue of physical realizability of such quantum systems. The problem of coherent quantum LQG feedback control studied in [35,50] is re-investigated in depth. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.3638","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":"2026-05-18T03:53:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FjvuoBZdy3SaUCeSizveWOYwePp2QKHbCqDv/s365VA0XgkgatJwJ9ncCmkfTQ6lguEqWtpu1lJReKnan/vrDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:30:47.646889Z"},"content_sha256":"d5ec31a1c49581f2fb15ba11f1750bc6ea1161c719c5f0c7b28b58ad5674dac1","schema_version":"1.0","event_id":"sha256:d5ec31a1c49581f2fb15ba11f1750bc6ea1161c719c5f0c7b28b58ad5674dac1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZJNRKE3M64YOJNIXONURRRMSGB/bundle.json","state_url":"https://pith.science/pith/ZJNRKE3M64YOJNIXONURRRMSGB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZJNRKE3M64YOJNIXONURRRMSGB/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":"2026-06-05T16:30:47Z","links":{"resolver":"https://pith.science/pith/ZJNRKE3M64YOJNIXONURRRMSGB","bundle":"https://pith.science/pith/ZJNRKE3M64YOJNIXONURRRMSGB/bundle.json","state":"https://pith.science/pith/ZJNRKE3M64YOJNIXONURRRMSGB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZJNRKE3M64YOJNIXONURRRMSGB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZJNRKE3M64YOJNIXONURRRMSGB","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":"3d825875739f19649ae923cb63b5d3892176f8facbd1e02e3c7d000e391e511c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-16T07:45:48Z","title_canon_sha256":"7d0311bdd967e8e1e5c6b3f55bf3d6a22201dc9aaf47dfe6467ba09cc57b5a2d"},"schema_version":"1.0","source":{"id":"1206.3638","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.3638","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"arxiv_version","alias_value":"1206.3638v1","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.3638","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"pith_short_12","alias_value":"ZJNRKE3M64YO","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZJNRKE3M64YOJNIX","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZJNRKE3M","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:d5ec31a1c49581f2fb15ba11f1750bc6ea1161c719c5f0c7b28b58ad5674dac1","target":"graph","created_at":"2026-05-18T03:53:19Z","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":"The purpose of this paper is to present a theoretic and numerical study of utilizing squeezing and phase shift in coherent feedback control of linear quantum optical systems. A quadrature representation with built-in phase shifters is proposed for such systems. Fundamental structural characterizations of linear quantum optical systems are derived in terms of the new quadrature representation. These results reveal considerable insights of issue of physical realizability of such quantum systems. The problem of coherent quantum LQG feedback control studied in [35,50] is re-investigated in depth. ","authors_text":"Bo Huang, Guofeng Zhang, Heung Wing Joseph Lee, Hu Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-16T07:45:48Z","title":"Coherent Feedback Control of Linear Quantum Optical Systems via Squeezing and Phase Shift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.3638","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":"sha256:2b5a38fbeb6b4ca9a0924849975cde5e761dd452d23b73f979482dae36e8488a","target":"record","created_at":"2026-05-18T03:53:19Z","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":"3d825875739f19649ae923cb63b5d3892176f8facbd1e02e3c7d000e391e511c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-16T07:45:48Z","title_canon_sha256":"7d0311bdd967e8e1e5c6b3f55bf3d6a22201dc9aaf47dfe6467ba09cc57b5a2d"},"schema_version":"1.0","source":{"id":"1206.3638","kind":"arxiv","version":1}},"canonical_sha256":"ca5b15136cf730e4b517736918c59230404481795cd0372a3a5638d7733d1840","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca5b15136cf730e4b517736918c59230404481795cd0372a3a5638d7733d1840","first_computed_at":"2026-05-18T03:53:19.281686Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:19.281686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"re/geUhkiGp1/RsnqXx3XsN13ZolIGygWiUdaDUwxzt22byGe8T725p5SUf1r0BuK/aDLctNYstsEoc0MsQiBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:19.282368Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.3638","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b5a38fbeb6b4ca9a0924849975cde5e761dd452d23b73f979482dae36e8488a","sha256:d5ec31a1c49581f2fb15ba11f1750bc6ea1161c719c5f0c7b28b58ad5674dac1"],"state_sha256":"fea0f2232c3b0750fd6fd1048889fc7324dd9f0186df6ebbf67ab5468df367a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6e1scYK3OCTCXPxZQMNvDp7esWS7a+UpNo6QRe3PBbixGifSugyaCU20ChFU/sjQG6tYhkggJ9N5HD7IQa7rDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T16:30:47.648887Z","bundle_sha256":"56eb6a6c31a6e9f06b83e28135fac216026bb3c88acfa9ce7e2e008da19c2b17"}}