Pith Number

pith:R66LCI3L

pith:2021:R66LCI3LEH5BWQL6W4ROH7KZOS

not attested not anchored not stored refs pending

Quantum metrology with precision reaching beyond-$1/N$ scaling through $N$-probe entanglement generating interactions

Jing Liu, Lushuai Cao, Mao Zhang, Min-Kang Zhou, Shou-Long Chen, Xiao-Chun Duan, Xiao-Fan Xu, Xing Deng, Zhi Gao, Zhong-Kun Hu

arxiv:2102.07079 v2 · 2021-02-14 · 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{R66LCI3LEH5BWQL6W4ROH7KZOS}

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	2026-07-05T02:59:14.302094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fbcb1236b21fa1b417eb722e3fd5974a71f135b85a01a39b03ccd110cc9b986

Aliases

arxiv: 2102.07079 · arxiv_version: 2102.07079v2 · doi: 10.48550/arxiv.2102.07079 · pith_short_12: R66LCI3LEH5B · pith_short_16: R66LCI3LEH5BWQL6 · pith_short_8: R66LCI3L

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/R66LCI3LEH5BWQL6W4ROH7KZOS \
  | 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: 8fbcb1236b21fa1b417eb722e3fd5974a71f135b85a01a39b03ccd110cc9b986

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "286860cf9c132b06f9b3d722e5f594e7295b0aeae18c2d4fdaac83444e77b962",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-02-14T05:50:05Z",
    "title_canon_sha256": "edcd2a5b255d14c26fc4c8c588d041b693e2d4681d2bd861ba44d8df03293bdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07079",
    "kind": "arxiv",
    "version": 2
  }
}