{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:2VR3TSXRZVNFIZS3DRX2QFCXM2","short_pith_number":"pith:2VR3TSXR","canonical_record":{"source":{"id":"0806.3547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-06-22T07:48:36Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"fb6c3cd268b4538913ccdc2af6a07f023db82a5f74ade6121d743ae7cca18d36","abstract_canon_sha256":"1436ee4a2335340b7cb004c1114b6d14cc8e5d79c1b36d4aaf9d16ad6f1baf51"},"schema_version":"1.0"},"canonical_sha256":"d563b9caf1cd5a54665b1c6fa81457669ca02414cd0bd4f8074a9c1d2afac88e","source":{"kind":"arxiv","id":"0806.3547","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3547","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3547v1","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3547","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"pith_short_12","alias_value":"2VR3TSXRZVNF","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"2VR3TSXRZVNFIZS3","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"2VR3TSXR","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:2VR3TSXRZVNFIZS3DRX2QFCXM2","target":"record","payload":{"canonical_record":{"source":{"id":"0806.3547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-06-22T07:48:36Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"fb6c3cd268b4538913ccdc2af6a07f023db82a5f74ade6121d743ae7cca18d36","abstract_canon_sha256":"1436ee4a2335340b7cb004c1114b6d14cc8e5d79c1b36d4aaf9d16ad6f1baf51"},"schema_version":"1.0"},"canonical_sha256":"d563b9caf1cd5a54665b1c6fa81457669ca02414cd0bd4f8074a9c1d2afac88e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:51.269873Z","signature_b64":"emM6t2wsSswdHI5h1/8V4qEj2x9zNJ8J2TViAIHsnWld2i1WKhDfj61YwfEgBJ5+MpXFc98loMzRep/QZyHZCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d563b9caf1cd5a54665b1c6fa81457669ca02414cd0bd4f8074a9c1d2afac88e","last_reissued_at":"2026-05-18T02:15:51.269407Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:51.269407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0806.3547","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":"2026-05-18T02:15:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/A7Mx69VcKcj49rCkHkJycGjSJJ9Yxn0E7d4EmIaOmWzwBOFOkXmxWvvGlv/ljoYmUYWEU1n9GuSB/cB3gnPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:03:01.163409Z"},"content_sha256":"d67ac450395a87920e89913500b296d107609e14404aa630cdc1917d36c4921b","schema_version":"1.0","event_id":"sha256:d67ac450395a87920e89913500b296d107609e14404aa630cdc1917d36c4921b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:2VR3TSXRZVNFIZS3DRX2QFCXM2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Uncollapsing of a quantum state in a superconducting phase qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"Alexander N. Korotkov, A. N. Cleland, A. O'Connell, Erik Lucero, H. Wang, John M. Martinis, M. Ansmann, Matthew Neeley, M. Hofheinz, Nadav Katz, Radoslaw C. Bialczak","submitted_at":"2008-06-22T07:48:36Z","abstract_excerpt":"We demonstrate in a superconducting qubit the conditional recovery (\"uncollapsing\") of a quantum state after a partial-collapse measurement. A weak measurement extracts information and results in a non-unitary transformation of the qubit state. However, by adding a rotation and a second partial measurement with the same strength, we erase the extracted information, effectively canceling the effect of both measurements. The fidelity of the state recovery is measured using quantum process tomography and found to be above 70% for partial-collapse strength less than 0.6."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3547","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":"2026-05-18T02:15:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GUnMzoacZqQ2s8Y5IswB3sw3jjZ5nObHweXKDCXqoMnWnNleTEFhh1MsLVDBIKFMuwyOUablwoxzvDhymVsDCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:03:01.163776Z"},"content_sha256":"a78c5723a58dad9550f3bb24b4d99ddf4c6ce2170d87160a66654ad47b3c55d0","schema_version":"1.0","event_id":"sha256:a78c5723a58dad9550f3bb24b4d99ddf4c6ce2170d87160a66654ad47b3c55d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/bundle.json","state_url":"https://pith.science/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/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":"2026-05-28T00:03:01Z","links":{"resolver":"https://pith.science/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2","bundle":"https://pith.science/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/bundle.json","state":"https://pith.science/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2VR3TSXRZVNFIZS3DRX2QFCXM2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:2VR3TSXRZVNFIZS3DRX2QFCXM2","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":"1436ee4a2335340b7cb004c1114b6d14cc8e5d79c1b36d4aaf9d16ad6f1baf51","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-06-22T07:48:36Z","title_canon_sha256":"fb6c3cd268b4538913ccdc2af6a07f023db82a5f74ade6121d743ae7cca18d36"},"schema_version":"1.0","source":{"id":"0806.3547","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3547","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3547v1","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3547","created_at":"2026-05-18T02:15:51Z"},{"alias_kind":"pith_short_12","alias_value":"2VR3TSXRZVNF","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"2VR3TSXRZVNFIZS3","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"2VR3TSXR","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:a78c5723a58dad9550f3bb24b4d99ddf4c6ce2170d87160a66654ad47b3c55d0","target":"graph","created_at":"2026-05-18T02:15:51Z","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 demonstrate in a superconducting qubit the conditional recovery (\"uncollapsing\") of a quantum state after a partial-collapse measurement. A weak measurement extracts information and results in a non-unitary transformation of the qubit state. However, by adding a rotation and a second partial measurement with the same strength, we erase the extracted information, effectively canceling the effect of both measurements. The fidelity of the state recovery is measured using quantum process tomography and found to be above 70% for partial-collapse strength less than 0.6.","authors_text":"Alexander N. Korotkov, A. N. Cleland, A. O'Connell, Erik Lucero, H. Wang, John M. Martinis, M. Ansmann, Matthew Neeley, M. Hofheinz, Nadav Katz, Radoslaw C. Bialczak","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-06-22T07:48:36Z","title":"Uncollapsing of a quantum state in a superconducting phase qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3547","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:d67ac450395a87920e89913500b296d107609e14404aa630cdc1917d36c4921b","target":"record","created_at":"2026-05-18T02:15:51Z","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":"1436ee4a2335340b7cb004c1114b6d14cc8e5d79c1b36d4aaf9d16ad6f1baf51","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-06-22T07:48:36Z","title_canon_sha256":"fb6c3cd268b4538913ccdc2af6a07f023db82a5f74ade6121d743ae7cca18d36"},"schema_version":"1.0","source":{"id":"0806.3547","kind":"arxiv","version":1}},"canonical_sha256":"d563b9caf1cd5a54665b1c6fa81457669ca02414cd0bd4f8074a9c1d2afac88e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d563b9caf1cd5a54665b1c6fa81457669ca02414cd0bd4f8074a9c1d2afac88e","first_computed_at":"2026-05-18T02:15:51.269407Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:51.269407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"emM6t2wsSswdHI5h1/8V4qEj2x9zNJ8J2TViAIHsnWld2i1WKhDfj61YwfEgBJ5+MpXFc98loMzRep/QZyHZCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:51.269873Z","signed_message":"canonical_sha256_bytes"},"source_id":"0806.3547","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d67ac450395a87920e89913500b296d107609e14404aa630cdc1917d36c4921b","sha256:a78c5723a58dad9550f3bb24b4d99ddf4c6ce2170d87160a66654ad47b3c55d0"],"state_sha256":"de7b80260e53a11a62a7be7f20267072203e7a68641bec24604f634b9ae9958a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n1ODUGiolF/tECYSizD2twSJw0N2J73FakgIDdrRH5tLxfzMOOM56qHj8EvPX9sd2meqTM+dbylmwjDPfiEDAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:03:01.166126Z","bundle_sha256":"14b67170b0a01cfb482c7de437adaf33cf5fed5053775392ecfe3af3f994544e"}}