Pith Number

pith:PM2TATXZ

pith:2011:PM2TATXZL4DHK5WHJRKW32VTQA

not attested not anchored not stored refs pending

Optimal estimation of entanglement in optical qubit systems

A. Florio, A. Meda, A. Shurupov, G. Brida, I. P. Degiovanni, M. G. A. Paris, M. Genovese, P. Giorda

arxiv:1102.3684 v2 · 2011-02-17 · 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{PM2TATXZL4DHK5WHJRKW32VTQA}

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	2026-05-18T02:03:09.716521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b35304ef95f067576c74c556deab38000bd304d6229e65be3b39122a5e64226

Aliases

arxiv: 1102.3684 · arxiv_version: 1102.3684v2 · doi: 10.48550/arxiv.1102.3684 · pith_short_12: PM2TATXZL4DH · pith_short_16: PM2TATXZL4DHK5WH · pith_short_8: PM2TATXZ

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/PM2TATXZL4DHK5WHJRKW32VTQA \
  | 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: 7b35304ef95f067576c74c556deab38000bd304d6229e65be3b39122a5e64226

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfd88223bf33ae93884864869a70ddbfeefc43b4e669f706b7ed5e1bcce0375a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-02-17T20:39:39Z",
    "title_canon_sha256": "ca4f7bbadee4f5e6db28c42c68f355f90eb4eb4bf3d181501abb7bfe85cdfd8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3684",
    "kind": "arxiv",
    "version": 2
  }
}