Pith Number

pith:4CAOR6JO

pith:2011:4CAOR6JO2LPUOUYARUBKQNNSPV

not attested not anchored not stored refs pending

Effectiveness of entangled coherent state in quantum metrology

Dan Murakami, Kentaro Kato, Osamu Hirota

arxiv:1108.1517 v4 · 2011-08-06 · 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{4CAOR6JO2LPUOUYARUBKQNNSPV}

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	2026-05-18T04:05:03.751154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e080e8f92ed2df4753008d02a835b27d617d02ab0d996187805916937a9dc8a9

Aliases

arxiv: 1108.1517 · arxiv_version: 1108.1517v4 · doi: 10.48550/arxiv.1108.1517 · pith_short_12: 4CAOR6JO2LPU · pith_short_16: 4CAOR6JO2LPUOUYA · pith_short_8: 4CAOR6JO

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/4CAOR6JO2LPUOUYARUBKQNNSPV \
  | 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: e080e8f92ed2df4753008d02a835b27d617d02ab0d996187805916937a9dc8a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6d508a32457a28164f075cd7b2b2379bbe439a2b5aeedd5f3cbb4c71e0188ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-08-06T23:36:24Z",
    "title_canon_sha256": "8b7aac7040135a7ef4e855222f269af41ad3712b249d4ae03229c5a6c235a8f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1517",
    "kind": "arxiv",
    "version": 4
  }
}