Pith Number

pith:VFGFM7CA

pith:2005:VFGFM7CAAHFV3QGKOTWCIVL6D2

not attested not anchored not stored refs pending

Long-lived quantum memory with nuclear atomic spins

Alice Sinatra (LKB - Lhomond), Aurelien Dantan (LKB - Jussieu), Elisabeth Giacobino (LKB - Jussieu), Franck Lalo\"e (LKB - Lhomond), Gael Reinaudi (LKB - Lhomond), Michel Pinard (LKB - Jussieu)

arxiv:quant-ph/0504152 v2 · 2005-04-20 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VFGFM7CAAHFV3QGKOTWCIVL6D2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:08:45.676959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a94c567c4001cb5dc0ca74ec24557e1eba4a9b529018e1a0078e8924858ea109

Aliases

arxiv: quant-ph/0504152 · arxiv_version: quant-ph/0504152v2 · doi: 10.48550/arxiv.quant-ph/0504152 · pith_short_12: VFGFM7CAAHFV · pith_short_16: VFGFM7CAAHFV3QGK · pith_short_8: VFGFM7CA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/VFGFM7CAAHFV3QGKOTWCIVL6D2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a94c567c4001cb5dc0ca74ec24557e1eba4a9b529018e1a0078e8924858ea109

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b5b4dfc4b649c372686d6b0bd502442394f164e2e55483a2d0825f29925dcb2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-04-20T11:50:02Z",
    "title_canon_sha256": "757181ae215b59f54be0e978fee76f3269fb3a2087c32a11b5bff7e8884bc4fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0504152",
    "kind": "arxiv",
    "version": 2
  }
}