{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:SPD7EMZF24PKSM6BVS7FZYU4QJ","short_pith_number":"pith:SPD7EMZF","schema_version":"1.0","canonical_sha256":"93c7f23325d71ea933c1acbe5ce29c827d7e522f78a4f5d636bcecb2b0ac4d7b","source":{"kind":"arxiv","id":"2606.01405","version":1},"attestation_state":"computed","paper":{"title":"Trajectories of Critical Unstable Qubits in and on the Bloch Sphere","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"Apostolos Pilaftsis, Snehit Panghal","submitted_at":"2026-05-31T19:04:43Z","abstract_excerpt":"We extend previous studies on a novel class of unstable two-level systems which were called Critical Unstable Qubits (CUQs). In an appropriately defined co-decaying frame, the CUQs exhibit striking phenomena of indefinite anharmonic oscillations between two states and coherence-decoherence oscillations of mixed states. These features are distinct from the usual Rabi oscillations observed in the Hermitian counterpart of two-level systems, which are harmonic and preserve the coherence of the quantum state. We employ the density matrix formalism to study these phenomena for mixed states and delve"},"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":"2606.01405","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-31T19:04:43Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"72c1aea965fc7aaeccb0f6e59ea663fc68edc59ee0d3ef58c7fec2986781edb0","abstract_canon_sha256":"3c1683ed321630f4a2dbcbefdc600147a57b13441258c36be67407d6fdf4d774"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T02:04:32.476650Z","signature_b64":"HKZMGcGvsd0eIOjL/V/B35dFoAzYSl8RVR8X0KJdOapycoLHT7DvU6e64kwO63KrIIRSs4FgkZ0nGZ8CnhwaAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93c7f23325d71ea933c1acbe5ce29c827d7e522f78a4f5d636bcecb2b0ac4d7b","last_reissued_at":"2026-06-02T02:04:32.476288Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T02:04:32.476288Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Trajectories of Critical Unstable Qubits in and on the Bloch Sphere","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"Apostolos Pilaftsis, Snehit Panghal","submitted_at":"2026-05-31T19:04:43Z","abstract_excerpt":"We extend previous studies on a novel class of unstable two-level systems which were called Critical Unstable Qubits (CUQs). In an appropriately defined co-decaying frame, the CUQs exhibit striking phenomena of indefinite anharmonic oscillations between two states and coherence-decoherence oscillations of mixed states. These features are distinct from the usual Rabi oscillations observed in the Hermitian counterpart of two-level systems, which are harmonic and preserve the coherence of the quantum state. We employ the density matrix formalism to study these phenomena for mixed states and delve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.01405","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.01405/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2606.01405","created_at":"2026-06-02T02:04:32.476355+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.01405v1","created_at":"2026-06-02T02:04:32.476355+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.01405","created_at":"2026-06-02T02:04:32.476355+00:00"},{"alias_kind":"pith_short_12","alias_value":"SPD7EMZF24PK","created_at":"2026-06-02T02:04:32.476355+00:00"},{"alias_kind":"pith_short_16","alias_value":"SPD7EMZF24PKSM6B","created_at":"2026-06-02T02:04:32.476355+00:00"},{"alias_kind":"pith_short_8","alias_value":"SPD7EMZF","created_at":"2026-06-02T02:04:32.476355+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/SPD7EMZF24PKSM6BVS7FZYU4QJ","json":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ.json","graph_json":"https://pith.science/api/pith-number/SPD7EMZF24PKSM6BVS7FZYU4QJ/graph.json","events_json":"https://pith.science/api/pith-number/SPD7EMZF24PKSM6BVS7FZYU4QJ/events.json","paper":"https://pith.science/paper/SPD7EMZF"},"agent_actions":{"view_html":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ","download_json":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ.json","view_paper":"https://pith.science/paper/SPD7EMZF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.01405&json=true","fetch_graph":"https://pith.science/api/pith-number/SPD7EMZF24PKSM6BVS7FZYU4QJ/graph.json","fetch_events":"https://pith.science/api/pith-number/SPD7EMZF24PKSM6BVS7FZYU4QJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ/action/storage_attestation","attest_author":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ/action/author_attestation","sign_citation":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ/action/citation_signature","submit_replication":"https://pith.science/pith/SPD7EMZF24PKSM6BVS7FZYU4QJ/action/replication_record"}},"created_at":"2026-06-02T02:04:32.476355+00:00","updated_at":"2026-06-02T02:04:32.476355+00:00"}