{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:PUICCNLHJZXBHUGHDM43G5XCF6","short_pith_number":"pith:PUICCNLH","canonical_record":{"source":{"id":"1410.8421","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-30T16:11:03Z","cross_cats_sorted":[],"title_canon_sha256":"9f23cdc68c5b03c90c17e3f79721d9d16397712c602f698c7fca6475bb32a459","abstract_canon_sha256":"9aadf3eaa1a011b132bfbf722a0e9b18c7e46b2564a43a361c70cbedde728c38"},"schema_version":"1.0"},"canonical_sha256":"7d102135674e6e13d0c71b39b376e22faba67c62ef2ca8cfc2e65ec7dfa83506","source":{"kind":"arxiv","id":"1410.8421","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.8421","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"arxiv_version","alias_value":"1410.8421v3","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.8421","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"pith_short_12","alias_value":"PUICCNLHJZXB","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PUICCNLHJZXBHUGH","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PUICCNLH","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:PUICCNLHJZXBHUGHDM43G5XCF6","target":"record","payload":{"canonical_record":{"source":{"id":"1410.8421","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-30T16:11:03Z","cross_cats_sorted":[],"title_canon_sha256":"9f23cdc68c5b03c90c17e3f79721d9d16397712c602f698c7fca6475bb32a459","abstract_canon_sha256":"9aadf3eaa1a011b132bfbf722a0e9b18c7e46b2564a43a361c70cbedde728c38"},"schema_version":"1.0"},"canonical_sha256":"7d102135674e6e13d0c71b39b376e22faba67c62ef2ca8cfc2e65ec7dfa83506","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:04.733922Z","signature_b64":"f/0Txpy2oTYUGq0C7KnGLSKoEwC98RSsGQYRfrCiCfHQlEc40FY5kX+ki3J+ujOOdfi50fYKn1GOHTzvZvTuDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d102135674e6e13d0c71b39b376e22faba67c62ef2ca8cfc2e65ec7dfa83506","last_reissued_at":"2026-05-18T01:29:04.733260Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:04.733260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.8421","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GlJLThqQtHwAEgEQqc7KUITRdmsxiGq7M5okn9JCvV4niqzViD524XCoByg+RQcX9FPrWTea7qAnn9lPk1zpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T14:38:50.504506Z"},"content_sha256":"a19370f987568f7bfede91332033886655b5bca3b9b33715116e638f24921c64","schema_version":"1.0","event_id":"sha256:a19370f987568f7bfede91332033886655b5bca3b9b33715116e638f24921c64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:PUICCNLHJZXBHUGHDM43G5XCF6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-mode squeezed states as Schrodinger-cat-like states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"E. Oudot, F. Fr\\\"owis, N. Gisin, N. Sangouard, P. Sekatski","submitted_at":"2014-10-30T16:11:03Z","abstract_excerpt":"In recent years, there has been an increased interest in the generation of superposition of coherent states with opposite phases, the so-called photonic Schrodinger-cat states. These experiments are very challenging and so far, cats involving small photon numbers only have been implemented. Here, we propose to consider two-mode squeezed states as examples of a Schrodinger-cat-like state. In particular, we are interested in several criteria aiming to identify quantum states that are macroscopic superpositions in a more general sense. We show how these criteria can be extended to continuous vari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.8421","kind":"arxiv","version":3},"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":"2026-05-18T01:29:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2WHFEs5E8AHbPyUpF3PxYlKXzxmGCSkRDWooLRCVw/IvMj6QapZIweQrMhNEzAIrKP7NiVpFeA6zjLUi7ZprBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T14:38:50.504861Z"},"content_sha256":"86e7d6ea756719ae49e747b2dce167f22334b929900571b70b5e2e227c1c3bfb","schema_version":"1.0","event_id":"sha256:86e7d6ea756719ae49e747b2dce167f22334b929900571b70b5e2e227c1c3bfb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUICCNLHJZXBHUGHDM43G5XCF6/bundle.json","state_url":"https://pith.science/pith/PUICCNLHJZXBHUGHDM43G5XCF6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUICCNLHJZXBHUGHDM43G5XCF6/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":"2026-05-20T14:38:50Z","links":{"resolver":"https://pith.science/pith/PUICCNLHJZXBHUGHDM43G5XCF6","bundle":"https://pith.science/pith/PUICCNLHJZXBHUGHDM43G5XCF6/bundle.json","state":"https://pith.science/pith/PUICCNLHJZXBHUGHDM43G5XCF6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUICCNLHJZXBHUGHDM43G5XCF6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:PUICCNLHJZXBHUGHDM43G5XCF6","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":"9aadf3eaa1a011b132bfbf722a0e9b18c7e46b2564a43a361c70cbedde728c38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-30T16:11:03Z","title_canon_sha256":"9f23cdc68c5b03c90c17e3f79721d9d16397712c602f698c7fca6475bb32a459"},"schema_version":"1.0","source":{"id":"1410.8421","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.8421","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"arxiv_version","alias_value":"1410.8421v3","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.8421","created_at":"2026-05-18T01:29:04Z"},{"alias_kind":"pith_short_12","alias_value":"PUICCNLHJZXB","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PUICCNLHJZXBHUGH","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PUICCNLH","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:86e7d6ea756719ae49e747b2dce167f22334b929900571b70b5e2e227c1c3bfb","target":"graph","created_at":"2026-05-18T01:29:04Z","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":"In recent years, there has been an increased interest in the generation of superposition of coherent states with opposite phases, the so-called photonic Schrodinger-cat states. These experiments are very challenging and so far, cats involving small photon numbers only have been implemented. Here, we propose to consider two-mode squeezed states as examples of a Schrodinger-cat-like state. In particular, we are interested in several criteria aiming to identify quantum states that are macroscopic superpositions in a more general sense. We show how these criteria can be extended to continuous vari","authors_text":"E. Oudot, F. Fr\\\"owis, N. Gisin, N. Sangouard, P. Sekatski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-30T16:11:03Z","title":"Two-mode squeezed states as Schrodinger-cat-like states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.8421","kind":"arxiv","version":3},"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:a19370f987568f7bfede91332033886655b5bca3b9b33715116e638f24921c64","target":"record","created_at":"2026-05-18T01:29:04Z","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":"9aadf3eaa1a011b132bfbf722a0e9b18c7e46b2564a43a361c70cbedde728c38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-30T16:11:03Z","title_canon_sha256":"9f23cdc68c5b03c90c17e3f79721d9d16397712c602f698c7fca6475bb32a459"},"schema_version":"1.0","source":{"id":"1410.8421","kind":"arxiv","version":3}},"canonical_sha256":"7d102135674e6e13d0c71b39b376e22faba67c62ef2ca8cfc2e65ec7dfa83506","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d102135674e6e13d0c71b39b376e22faba67c62ef2ca8cfc2e65ec7dfa83506","first_computed_at":"2026-05-18T01:29:04.733260Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:04.733260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f/0Txpy2oTYUGq0C7KnGLSKoEwC98RSsGQYRfrCiCfHQlEc40FY5kX+ki3J+ujOOdfi50fYKn1GOHTzvZvTuDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:04.733922Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.8421","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a19370f987568f7bfede91332033886655b5bca3b9b33715116e638f24921c64","sha256:86e7d6ea756719ae49e747b2dce167f22334b929900571b70b5e2e227c1c3bfb"],"state_sha256":"8e1a40c64dd42c66fa215f1f5e84a0cb4fbcce2f32b9cae26bad3ca35aa3f395"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WDxea1AbSZNoQYMf920gqUUIgcllnju/O7LT9O1F359Cvc0Ixsorhnay5zbj4O4zQXW1zl9GiIl+nFXoc3EHDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T14:38:50.506830Z","bundle_sha256":"511b4fd673fa7fd62713c35f4f523c96d6c15605191bf1090da6350351c111e1"}}