{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:H3BNERFYTOAP3BYD6TZHB3X726","short_pith_number":"pith:H3BNERFY","schema_version":"1.0","canonical_sha256":"3ec2d244b89b80fd8703f4f270eeffd79453f2082f496d002f03967a88bb1b05","source":{"kind":"arxiv","id":"2105.01863","version":2},"attestation_state":"computed","paper":{"title":"Quantum speed-up in collisional battery charging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G\\'eraldine Haack, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Stefan Nimmrichter, Stella Seah","submitted_at":"2021-05-05T04:28:43Z","abstract_excerpt":"We present a collision model for the charging of a quantum battery by identical nonequilibrium qubit units. When the units are prepared in a mixture of energy eigenstates, the energy gain in the battery can be described by a classical random walk, where both average energy and variance grow linearly with time. Conversely, when the qubits contain quantum coherence, interference effects buildup in the battery and lead to a faster spreading of the energy distribution, reminiscent of a quantum random walk. This can be exploited for faster and more efficient charging of a battery initialized in the"},"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":"2105.01863","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-05T04:28:43Z","cross_cats_sorted":[],"title_canon_sha256":"c71fa59c089760dd68f5d72a0573f100d8415e1799a1e6b058c64061f492a78f","abstract_canon_sha256":"5fc766e53c8c9d39e07bf7a5c92cd13f54e3cb2e0c84a21f6808be2b226e258c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:12:04.083646Z","signature_b64":"byzy3i5m7O9DDSJmcU5LMrkT+B656pZqrwfIiBqxdDk+9xL/l1OATKeevoXJbSvgZxwvdnE79G+gJRksz51eBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ec2d244b89b80fd8703f4f270eeffd79453f2082f496d002f03967a88bb1b05","last_reissued_at":"2026-07-05T03:12:04.083218Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:12:04.083218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum speed-up in collisional battery charging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G\\'eraldine Haack, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Stefan Nimmrichter, Stella Seah","submitted_at":"2021-05-05T04:28:43Z","abstract_excerpt":"We present a collision model for the charging of a quantum battery by identical nonequilibrium qubit units. When the units are prepared in a mixture of energy eigenstates, the energy gain in the battery can be described by a classical random walk, where both average energy and variance grow linearly with time. Conversely, when the qubits contain quantum coherence, interference effects buildup in the battery and lead to a faster spreading of the energy distribution, reminiscent of a quantum random walk. This can be exploited for faster and more efficient charging of a battery initialized in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.01863","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2105.01863/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":"2105.01863","created_at":"2026-07-05T03:12:04.083273+00:00"},{"alias_kind":"arxiv_version","alias_value":"2105.01863v2","created_at":"2026-07-05T03:12:04.083273+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.01863","created_at":"2026-07-05T03:12:04.083273+00:00"},{"alias_kind":"pith_short_12","alias_value":"H3BNERFYTOAP","created_at":"2026-07-05T03:12:04.083273+00:00"},{"alias_kind":"pith_short_16","alias_value":"H3BNERFYTOAP3BYD","created_at":"2026-07-05T03:12:04.083273+00:00"},{"alias_kind":"pith_short_8","alias_value":"H3BNERFY","created_at":"2026-07-05T03:12:04.083273+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/H3BNERFYTOAP3BYD6TZHB3X726","json":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726.json","graph_json":"https://pith.science/api/pith-number/H3BNERFYTOAP3BYD6TZHB3X726/graph.json","events_json":"https://pith.science/api/pith-number/H3BNERFYTOAP3BYD6TZHB3X726/events.json","paper":"https://pith.science/paper/H3BNERFY"},"agent_actions":{"view_html":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726","download_json":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726.json","view_paper":"https://pith.science/paper/H3BNERFY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2105.01863&json=true","fetch_graph":"https://pith.science/api/pith-number/H3BNERFYTOAP3BYD6TZHB3X726/graph.json","fetch_events":"https://pith.science/api/pith-number/H3BNERFYTOAP3BYD6TZHB3X726/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726/action/storage_attestation","attest_author":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726/action/author_attestation","sign_citation":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726/action/citation_signature","submit_replication":"https://pith.science/pith/H3BNERFYTOAP3BYD6TZHB3X726/action/replication_record"}},"created_at":"2026-07-05T03:12:04.083273+00:00","updated_at":"2026-07-05T03:12:04.083273+00:00"}