{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:NWCDGGXAW77KMDKZI43USKV4BX","short_pith_number":"pith:NWCDGGXA","schema_version":"1.0","canonical_sha256":"6d84331ae0b7fea60d594737492abc0dccec2089f07034a5e811af56fa2ba6b9","source":{"kind":"arxiv","id":"1101.1139","version":1},"attestation_state":"computed","paper":{"title":"Demonstration of reversible phase-insensitive optical amplifier","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Akira Furusawa, Jun-ichi Yoshikawa, Radim Filip, Yoshichika Miwa","submitted_at":"2011-01-06T04:51:05Z","abstract_excerpt":"We experimentally demonstrate phase-insensitive linear optical amplification which preserves the idler at the output. Since our amplification operation is unitary up to small excess noise, it is reversible beyond the classical limit. The entanglement between the two output modes is the resource for the reversibility. The amplification gain of 2.0 is demonstrated. In addition, combining this amplifier with a beamsplitter, we also demonstrate approximate cloning of coherent states where an anticlone is present. We investigate the reversibility by reconstructing the initial state from the output "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1101.1139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-01-06T04:51:05Z","cross_cats_sorted":[],"title_canon_sha256":"9e971c7afea4417597d78727571bdccc007c14a88838ef91083d8ec451346758","abstract_canon_sha256":"5af350afc25afe4d839f47c2924a552f4e75b1d0415dc3d3bd942e6107f82fd9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:22.404610Z","signature_b64":"Ds8+wa3Cbwox4TaWLehiI2wvgKo69DvA9pcidcJnAgAftJDXpbVdKPxuUAjTr2USmqjnydvECPVultab13W0Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d84331ae0b7fea60d594737492abc0dccec2089f07034a5e811af56fa2ba6b9","last_reissued_at":"2026-05-18T04:21:22.404007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:22.404007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Demonstration of reversible phase-insensitive optical amplifier","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Akira Furusawa, Jun-ichi Yoshikawa, Radim Filip, Yoshichika Miwa","submitted_at":"2011-01-06T04:51:05Z","abstract_excerpt":"We experimentally demonstrate phase-insensitive linear optical amplification which preserves the idler at the output. Since our amplification operation is unitary up to small excess noise, it is reversible beyond the classical limit. The entanglement between the two output modes is the resource for the reversibility. The amplification gain of 2.0 is demonstrated. In addition, combining this amplifier with a beamsplitter, we also demonstrate approximate cloning of coherent states where an anticlone is present. We investigate the reversibility by reconstructing the initial state from the output "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.1139","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1101.1139","created_at":"2026-05-18T04:21:22.404098+00:00"},{"alias_kind":"arxiv_version","alias_value":"1101.1139v1","created_at":"2026-05-18T04:21:22.404098+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.1139","created_at":"2026-05-18T04:21:22.404098+00:00"},{"alias_kind":"pith_short_12","alias_value":"NWCDGGXAW77K","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_16","alias_value":"NWCDGGXAW77KMDKZ","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_8","alias_value":"NWCDGGXA","created_at":"2026-05-18T12:26:37.096874+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX","json":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX.json","graph_json":"https://pith.science/api/pith-number/NWCDGGXAW77KMDKZI43USKV4BX/graph.json","events_json":"https://pith.science/api/pith-number/NWCDGGXAW77KMDKZI43USKV4BX/events.json","paper":"https://pith.science/paper/NWCDGGXA"},"agent_actions":{"view_html":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX","download_json":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX.json","view_paper":"https://pith.science/paper/NWCDGGXA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1101.1139&json=true","fetch_graph":"https://pith.science/api/pith-number/NWCDGGXAW77KMDKZI43USKV4BX/graph.json","fetch_events":"https://pith.science/api/pith-number/NWCDGGXAW77KMDKZI43USKV4BX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX/action/storage_attestation","attest_author":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX/action/author_attestation","sign_citation":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX/action/citation_signature","submit_replication":"https://pith.science/pith/NWCDGGXAW77KMDKZI43USKV4BX/action/replication_record"}},"created_at":"2026-05-18T04:21:22.404098+00:00","updated_at":"2026-05-18T04:21:22.404098+00:00"}