{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MDMET4M4QL34EDEML7DNQT76TH","short_pith_number":"pith:MDMET4M4","canonical_record":{"source":{"id":"1803.08855","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-23T16:01:46Z","cross_cats_sorted":[],"title_canon_sha256":"40dea8b7d191b1dbd05b9ea98db762efd4de04c88e300bbf4bc3abbb6bba47d2","abstract_canon_sha256":"ba7b7574a8f35bdb9c208ac23da97e29ade39b215a7d93dc83fc250a224ad74e"},"schema_version":"1.0"},"canonical_sha256":"60d849f19c82f7c20c8c5fc6d84ffe99fb71774277e08aee6a7509b3cfa64d8b","source":{"kind":"arxiv","id":"1803.08855","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08855","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08855v2","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08855","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"MDMET4M4QL34","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MDMET4M4QL34EDEM","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MDMET4M4","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MDMET4M4QL34EDEML7DNQT76TH","target":"record","payload":{"canonical_record":{"source":{"id":"1803.08855","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-23T16:01:46Z","cross_cats_sorted":[],"title_canon_sha256":"40dea8b7d191b1dbd05b9ea98db762efd4de04c88e300bbf4bc3abbb6bba47d2","abstract_canon_sha256":"ba7b7574a8f35bdb9c208ac23da97e29ade39b215a7d93dc83fc250a224ad74e"},"schema_version":"1.0"},"canonical_sha256":"60d849f19c82f7c20c8c5fc6d84ffe99fb71774277e08aee6a7509b3cfa64d8b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:29.948067Z","signature_b64":"XOPeHAlnY8Xoss9YzvGTMb/L1eS/MsPKZWhtUe8tO3H9SgyKJCBlvUCI1pOcAJyAkBlAh37UxnWbOXGdBiiJAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60d849f19c82f7c20c8c5fc6d84ffe99fb71774277e08aee6a7509b3cfa64d8b","last_reissued_at":"2026-05-18T00:01:29.947616Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:29.947616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.08855","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":"2026-05-18T00:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Twbt3ya5Hj4fjWC9iJrGR9MGRQywRjMXp71vD3c2kFUAI/e2J95cXZNZUfkiDsB9X5RFysw/u0WKYA4ecq4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:24:20.109657Z"},"content_sha256":"26db885ca6005235b0a7ad48701e59863134a266069a27fcfadb2fbe775428bf","schema_version":"1.0","event_id":"sha256:26db885ca6005235b0a7ad48701e59863134a266069a27fcfadb2fbe775428bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MDMET4M4QL34EDEML7DNQT76TH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Preparation of arbitrary quantum states with regular $P$~functions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. K\\\"uhn, W. Vogel","submitted_at":"2018-03-23T16:01:46Z","abstract_excerpt":"We propose a quantum optical device to experimentally realize quantum processes, which perform the regularization of the---in general highly singular---Glauber-Sudarshan $P$~functions of arbitrary quantum states before their application and/or measurement. This allows us to produce a broad class of nonclassical states with regular $P$~functions, also called nonclassicality quasiprobabilities. For this purpose, the input states are combined on highly transmissive beam splitters with specific Gaussian or non-Gaussian classical states. We study both balanced and unbalanced homodyne detections for"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08855","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":"2026-05-18T00:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uovcvAcIlhjb0lBEdBWJjXoZVPxTZDYGHkR2R4UtSMfz38ppYjW5WMTlE4EzQXmkS4YDJLcfN7p6qjdIJKrrDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:24:20.110382Z"},"content_sha256":"9d7ff42414918f8817694981d126c726882390c31d4e9baa960bb02a6f3526d4","schema_version":"1.0","event_id":"sha256:9d7ff42414918f8817694981d126c726882390c31d4e9baa960bb02a6f3526d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MDMET4M4QL34EDEML7DNQT76TH/bundle.json","state_url":"https://pith.science/pith/MDMET4M4QL34EDEML7DNQT76TH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MDMET4M4QL34EDEML7DNQT76TH/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":"2026-06-09T23:24:20Z","links":{"resolver":"https://pith.science/pith/MDMET4M4QL34EDEML7DNQT76TH","bundle":"https://pith.science/pith/MDMET4M4QL34EDEML7DNQT76TH/bundle.json","state":"https://pith.science/pith/MDMET4M4QL34EDEML7DNQT76TH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MDMET4M4QL34EDEML7DNQT76TH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MDMET4M4QL34EDEML7DNQT76TH","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":"ba7b7574a8f35bdb9c208ac23da97e29ade39b215a7d93dc83fc250a224ad74e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-23T16:01:46Z","title_canon_sha256":"40dea8b7d191b1dbd05b9ea98db762efd4de04c88e300bbf4bc3abbb6bba47d2"},"schema_version":"1.0","source":{"id":"1803.08855","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08855","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08855v2","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08855","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"MDMET4M4QL34","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MDMET4M4QL34EDEM","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MDMET4M4","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:9d7ff42414918f8817694981d126c726882390c31d4e9baa960bb02a6f3526d4","target":"graph","created_at":"2026-05-18T00:01:29Z","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 propose a quantum optical device to experimentally realize quantum processes, which perform the regularization of the---in general highly singular---Glauber-Sudarshan $P$~functions of arbitrary quantum states before their application and/or measurement. This allows us to produce a broad class of nonclassical states with regular $P$~functions, also called nonclassicality quasiprobabilities. For this purpose, the input states are combined on highly transmissive beam splitters with specific Gaussian or non-Gaussian classical states. We study both balanced and unbalanced homodyne detections for","authors_text":"B. K\\\"uhn, W. Vogel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-23T16:01:46Z","title":"Preparation of arbitrary quantum states with regular $P$~functions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08855","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":"sha256:26db885ca6005235b0a7ad48701e59863134a266069a27fcfadb2fbe775428bf","target":"record","created_at":"2026-05-18T00:01:29Z","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":"ba7b7574a8f35bdb9c208ac23da97e29ade39b215a7d93dc83fc250a224ad74e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-23T16:01:46Z","title_canon_sha256":"40dea8b7d191b1dbd05b9ea98db762efd4de04c88e300bbf4bc3abbb6bba47d2"},"schema_version":"1.0","source":{"id":"1803.08855","kind":"arxiv","version":2}},"canonical_sha256":"60d849f19c82f7c20c8c5fc6d84ffe99fb71774277e08aee6a7509b3cfa64d8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60d849f19c82f7c20c8c5fc6d84ffe99fb71774277e08aee6a7509b3cfa64d8b","first_computed_at":"2026-05-18T00:01:29.947616Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:29.947616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XOPeHAlnY8Xoss9YzvGTMb/L1eS/MsPKZWhtUe8tO3H9SgyKJCBlvUCI1pOcAJyAkBlAh37UxnWbOXGdBiiJAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:29.948067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.08855","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26db885ca6005235b0a7ad48701e59863134a266069a27fcfadb2fbe775428bf","sha256:9d7ff42414918f8817694981d126c726882390c31d4e9baa960bb02a6f3526d4"],"state_sha256":"99887e67878d34d1a7a2d3dfb9fad4aebbf4fb4b9502ddcfae6d0126607d24f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FeoA4Q11Y1HsdQIVLf4jcz4YlkyiZG5E/Q4F8zC+nwgs/et9QMrbqsZbSsYG9j9VEny3tx6vf1np/PFaHbyzDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T23:24:20.114733Z","bundle_sha256":"d0d5bae1d8c1235afb99188a9c8f95fa7deb333e891084862c21e7d2dab09f26"}}