{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:A4DY7LBS7WHP6ESP2HMKA6AV5P","short_pith_number":"pith:A4DY7LBS","canonical_record":{"source":{"id":"1407.8340","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-31T10:11:30Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"b66a2b4d97b5ef8e21ea0ea3bfab05dc8f837f12eac77734340860b048a6682c","abstract_canon_sha256":"c9717b380406985e35014a22b2ef4a26e594adefd1ab17f74b97ae3c051de90b"},"schema_version":"1.0"},"canonical_sha256":"07078fac32fd8eff124fd1d8a07815ebf2a44fc0324e8c00b19a5ce11108db74","source":{"kind":"arxiv","id":"1407.8340","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.8340","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"arxiv_version","alias_value":"1407.8340v2","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.8340","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"pith_short_12","alias_value":"A4DY7LBS7WHP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"A4DY7LBS7WHP6ESP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"A4DY7LBS","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:A4DY7LBS7WHP6ESP2HMKA6AV5P","target":"record","payload":{"canonical_record":{"source":{"id":"1407.8340","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-31T10:11:30Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"b66a2b4d97b5ef8e21ea0ea3bfab05dc8f837f12eac77734340860b048a6682c","abstract_canon_sha256":"c9717b380406985e35014a22b2ef4a26e594adefd1ab17f74b97ae3c051de90b"},"schema_version":"1.0"},"canonical_sha256":"07078fac32fd8eff124fd1d8a07815ebf2a44fc0324e8c00b19a5ce11108db74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:21.220598Z","signature_b64":"qCN6h/scWO4Of4TuqN4rcW8/zFM0VDoS9w07dNogiT/9EmBs33+2JqBarHI6D/08Psrpynk9UP+FXArEsrK4DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"07078fac32fd8eff124fd1d8a07815ebf2a44fc0324e8c00b19a5ce11108db74","last_reissued_at":"2026-05-18T01:20:21.219948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:21.219948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.8340","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":"2026-05-18T01:20:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tFLqAigXcSCbuGMddhUJ3WrrLaZGW20Sy8ChO/tjh8EQrTJ2NRa8AaksX4rcvmU3ecgvnrhkWpSjMURB8FPJCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:10:11.098073Z"},"content_sha256":"f25696cd2dd34bdfcc03a81a918a627f2c55f070da97b57e6011c3bb0ce3c9a1","schema_version":"1.0","event_id":"sha256:f25696cd2dd34bdfcc03a81a918a627f2c55f070da97b57e6011c3bb0ce3c9a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:A4DY7LBS7WHP6ESP2HMKA6AV5P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Maximizing the purity of a qubit evolving in an anisotropic environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Stefano Chesi, W. A. Coish, Xiaoya Judy Wang","submitted_at":"2014-07-31T10:11:30Z","abstract_excerpt":"We provide a general method to calculate and maximize the purity of a qubit interacting with an anisotropic non-Markovian environment. Counter to intuition, we find that the purity is often maximized by preparing and storing the qubit in a superposition of non-interacting eigenstates. For a model relevant to decoherence of a heavy-hole spin qubit in a quantum dot or for a singlet-triplet qubit for two electrons in a double quantum dot, we show that preparation of the qubit in its non-interacting ground state can actually be the worst choice to maximize purity. We further give analytical result"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.8340","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":"2026-05-18T01:20:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PsAH01/X8lj6spFGZQgBTayZZocaNqqfVsK/Mfa4hrXUvJkvYvJmgm6ufOgXOYKCMaZl+QleUsqGDU9ilANwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:10:11.098635Z"},"content_sha256":"5d1bdb117587b7b6b9540e0494337f3fedc49a7991bffa566808f004f5d40daf","schema_version":"1.0","event_id":"sha256:5d1bdb117587b7b6b9540e0494337f3fedc49a7991bffa566808f004f5d40daf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/bundle.json","state_url":"https://pith.science/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/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":"2026-05-19T02:10:11Z","links":{"resolver":"https://pith.science/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P","bundle":"https://pith.science/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/bundle.json","state":"https://pith.science/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4DY7LBS7WHP6ESP2HMKA6AV5P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:A4DY7LBS7WHP6ESP2HMKA6AV5P","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":"c9717b380406985e35014a22b2ef4a26e594adefd1ab17f74b97ae3c051de90b","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-31T10:11:30Z","title_canon_sha256":"b66a2b4d97b5ef8e21ea0ea3bfab05dc8f837f12eac77734340860b048a6682c"},"schema_version":"1.0","source":{"id":"1407.8340","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.8340","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"arxiv_version","alias_value":"1407.8340v2","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.8340","created_at":"2026-05-18T01:20:21Z"},{"alias_kind":"pith_short_12","alias_value":"A4DY7LBS7WHP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"A4DY7LBS7WHP6ESP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"A4DY7LBS","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:5d1bdb117587b7b6b9540e0494337f3fedc49a7991bffa566808f004f5d40daf","target":"graph","created_at":"2026-05-18T01:20:21Z","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 provide a general method to calculate and maximize the purity of a qubit interacting with an anisotropic non-Markovian environment. Counter to intuition, we find that the purity is often maximized by preparing and storing the qubit in a superposition of non-interacting eigenstates. For a model relevant to decoherence of a heavy-hole spin qubit in a quantum dot or for a singlet-triplet qubit for two electrons in a double quantum dot, we show that preparation of the qubit in its non-interacting ground state can actually be the worst choice to maximize purity. We further give analytical result","authors_text":"Stefano Chesi, W. A. Coish, Xiaoya Judy Wang","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-31T10:11:30Z","title":"Maximizing the purity of a qubit evolving in an anisotropic environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.8340","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:f25696cd2dd34bdfcc03a81a918a627f2c55f070da97b57e6011c3bb0ce3c9a1","target":"record","created_at":"2026-05-18T01:20:21Z","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":"c9717b380406985e35014a22b2ef4a26e594adefd1ab17f74b97ae3c051de90b","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-31T10:11:30Z","title_canon_sha256":"b66a2b4d97b5ef8e21ea0ea3bfab05dc8f837f12eac77734340860b048a6682c"},"schema_version":"1.0","source":{"id":"1407.8340","kind":"arxiv","version":2}},"canonical_sha256":"07078fac32fd8eff124fd1d8a07815ebf2a44fc0324e8c00b19a5ce11108db74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07078fac32fd8eff124fd1d8a07815ebf2a44fc0324e8c00b19a5ce11108db74","first_computed_at":"2026-05-18T01:20:21.219948Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:21.219948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qCN6h/scWO4Of4TuqN4rcW8/zFM0VDoS9w07dNogiT/9EmBs33+2JqBarHI6D/08Psrpynk9UP+FXArEsrK4DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:21.220598Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.8340","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f25696cd2dd34bdfcc03a81a918a627f2c55f070da97b57e6011c3bb0ce3c9a1","sha256:5d1bdb117587b7b6b9540e0494337f3fedc49a7991bffa566808f004f5d40daf"],"state_sha256":"5dd1ffdf177977cbeb72e0a80cb9748639569a27caeabe0a984a4a0d6d04a031"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QdbV84PUJwUt8lzhVF342ysEfQznzmu4BGjeOxYO6Ks/3LHE27JwyqxuBYuhOuWC33WE35wp5HgXyEsV2TwRCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T02:10:11.100454Z","bundle_sha256":"000612195317257d4617993823ef082b32198f85411f9d32c22efd4314ccbc7e"}}