{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:D3DXPUXRI752DIIG2H5LAEL3IQ","short_pith_number":"pith:D3DXPUXR","canonical_record":{"source":{"id":"1901.04417","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-14T17:26:30Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"57d5978f07667f62b5ac329483fe866fb194490696b461f70ca6a3f2617479e1","abstract_canon_sha256":"82c5182b0407af8171cce443bb6f55f15d053e034ec7a937af7683ebceb2f784"},"schema_version":"1.0"},"canonical_sha256":"1ec777d2f147fba1a106d1fab0117b441cb4deecdb41308f39432e5f3f01969c","source":{"kind":"arxiv","id":"1901.04417","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04417","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04417v2","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04417","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"pith_short_12","alias_value":"D3DXPUXRI752","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D3DXPUXRI752DIIG","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D3DXPUXR","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:D3DXPUXRI752DIIG2H5LAEL3IQ","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04417","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-14T17:26:30Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"57d5978f07667f62b5ac329483fe866fb194490696b461f70ca6a3f2617479e1","abstract_canon_sha256":"82c5182b0407af8171cce443bb6f55f15d053e034ec7a937af7683ebceb2f784"},"schema_version":"1.0"},"canonical_sha256":"1ec777d2f147fba1a106d1fab0117b441cb4deecdb41308f39432e5f3f01969c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:08.405809Z","signature_b64":"CQ0AA91lOouwQcwCuJErwLXhpesdZIZsjAqYZEBsCddQ15VnIE1LDEF5Mg3mAhI6cLeqhzzOG4z3RpW5+s6vBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ec777d2f147fba1a106d1fab0117b441cb4deecdb41308f39432e5f3f01969c","last_reissued_at":"2026-05-17T23:42:08.405191Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:08.405191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04417","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":"2026-05-17T23:42:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t5wpb7Dwni/2odOyNmfoIKlLRZKVo7l3oxFTwf+qJWf+fc/5i5LvLSQjYPcos/RLPv6kKLxclzLzWZbGc780AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:22:04.461539Z"},"content_sha256":"0159e490cd9a0fccf699eb3bbfb89e48a222ee72351bc2a79f10f02d59245676","schema_version":"1.0","event_id":"sha256:0159e490cd9a0fccf699eb3bbfb89e48a222ee72351bc2a79f10f02d59245676"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:D3DXPUXRI752DIIG2H5LAEL3IQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoherence benchmarking of superconducting qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"cond-mat.supr-con","authors_text":"Andreas Bengtsson, David Niepce, Jonas Bylander, Jonathan Burnett, Marco Scigliuzzo, Marina Kudra, Per Delsing","submitted_at":"2019-01-14T17:26:30Z","abstract_excerpt":"We benchmark the decoherence of superconducting qubits to examine the temporal stability of energy-relaxation and dephasing. By collecting statistics during measurements spanning multiple days, we find the mean parameters $\\overline{T_{1}}$ = 49 $\\mu$s and $\\overline{T_{2}^{*}}$ = 95 $\\mu$s, however, both of these quantities fluctuate explaining the need for frequent re-calibration in qubit setups. Our main finding is that fluctuations in qubit relaxation are local to the qubit and are caused by instabilities of near-resonant two-level-systems (TLS). Through statistical analysis, we determine "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04417","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":"2026-05-17T23:42:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lLA2qpYYtEFQFILkKRebLJInh0246kiohqs3pI2glIvcwqIWOLt0cDeVotiJq5kFMUMzbhm80f7F0gnTUAHIBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:22:04.461894Z"},"content_sha256":"b2819e191a06143760f781c5491d7ca7633bb8815074b281d46a93d9489bc235","schema_version":"1.0","event_id":"sha256:b2819e191a06143760f781c5491d7ca7633bb8815074b281d46a93d9489bc235"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/bundle.json","state_url":"https://pith.science/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/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":"2026-06-03T11:22:04Z","links":{"resolver":"https://pith.science/pith/D3DXPUXRI752DIIG2H5LAEL3IQ","bundle":"https://pith.science/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/bundle.json","state":"https://pith.science/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D3DXPUXRI752DIIG2H5LAEL3IQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:D3DXPUXRI752DIIG2H5LAEL3IQ","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":"82c5182b0407af8171cce443bb6f55f15d053e034ec7a937af7683ebceb2f784","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-14T17:26:30Z","title_canon_sha256":"57d5978f07667f62b5ac329483fe866fb194490696b461f70ca6a3f2617479e1"},"schema_version":"1.0","source":{"id":"1901.04417","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04417","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04417v2","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04417","created_at":"2026-05-17T23:42:08Z"},{"alias_kind":"pith_short_12","alias_value":"D3DXPUXRI752","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D3DXPUXRI752DIIG","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D3DXPUXR","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:b2819e191a06143760f781c5491d7ca7633bb8815074b281d46a93d9489bc235","target":"graph","created_at":"2026-05-17T23:42:08Z","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 benchmark the decoherence of superconducting qubits to examine the temporal stability of energy-relaxation and dephasing. By collecting statistics during measurements spanning multiple days, we find the mean parameters $\\overline{T_{1}}$ = 49 $\\mu$s and $\\overline{T_{2}^{*}}$ = 95 $\\mu$s, however, both of these quantities fluctuate explaining the need for frequent re-calibration in qubit setups. Our main finding is that fluctuations in qubit relaxation are local to the qubit and are caused by instabilities of near-resonant two-level-systems (TLS). Through statistical analysis, we determine ","authors_text":"Andreas Bengtsson, David Niepce, Jonas Bylander, Jonathan Burnett, Marco Scigliuzzo, Marina Kudra, Per Delsing","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-14T17:26:30Z","title":"Decoherence benchmarking of superconducting qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04417","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":"sha256:0159e490cd9a0fccf699eb3bbfb89e48a222ee72351bc2a79f10f02d59245676","target":"record","created_at":"2026-05-17T23:42:08Z","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":"82c5182b0407af8171cce443bb6f55f15d053e034ec7a937af7683ebceb2f784","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-14T17:26:30Z","title_canon_sha256":"57d5978f07667f62b5ac329483fe866fb194490696b461f70ca6a3f2617479e1"},"schema_version":"1.0","source":{"id":"1901.04417","kind":"arxiv","version":2}},"canonical_sha256":"1ec777d2f147fba1a106d1fab0117b441cb4deecdb41308f39432e5f3f01969c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ec777d2f147fba1a106d1fab0117b441cb4deecdb41308f39432e5f3f01969c","first_computed_at":"2026-05-17T23:42:08.405191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:08.405191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CQ0AA91lOouwQcwCuJErwLXhpesdZIZsjAqYZEBsCddQ15VnIE1LDEF5Mg3mAhI6cLeqhzzOG4z3RpW5+s6vBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:08.405809Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04417","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0159e490cd9a0fccf699eb3bbfb89e48a222ee72351bc2a79f10f02d59245676","sha256:b2819e191a06143760f781c5491d7ca7633bb8815074b281d46a93d9489bc235"],"state_sha256":"99a8ee4828c7f903c342dac7b951922e4628fbe1b53fa78b7025e371c455058a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UzahCTrLHZRJBklQTpmonyP5Lm2llEtk9eZTzrs6jGYgltqm80ENyhrgHRVc0GqA/iuQspMYTUnRS4h4hLQkCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T11:22:04.463903Z","bundle_sha256":"f7e8a8167dfcad5de99f39b367e2938e9eb4f75ad8017ffd14806a80579a5933"}}