Pith Number

pith:QQAERKTF

pith:2018:QQAERKTFD4BFAVCJ44UCO33FTH

not attested not anchored not stored refs pending

An experimental measurement of the topological charge of orbital angular momentum beams through weak measurement

Chenhui Wang, Feiran Wang, Fuli Li, Hong Gao, Jing Zhu, Jinwen Wang, L. C. Kwek, Pei Zhang, Qichang Li, Yingnan Zhou

arxiv:1801.07341 v1 · 2018-01-22 · physics.optics · 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{QQAERKTFD4BFAVCJ44UCO33FTH}

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	2026-05-18T00:25:13.057801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

840048aa651f02505449e728276f6599d7216f981ffb5d95355e1c842269995e

Aliases

arxiv: 1801.07341 · arxiv_version: 1801.07341v1 · doi: 10.48550/arxiv.1801.07341 · pith_short_12: QQAERKTFD4BF · pith_short_16: QQAERKTFD4BFAVCJ · pith_short_8: QQAERKTF

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/QQAERKTFD4BFAVCJ44UCO33FTH \
  | 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: 840048aa651f02505449e728276f6599d7216f981ffb5d95355e1c842269995e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c5d479773304a722f1067df83221a63b31de060a6f0d6f27d2bffe602171e62",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-01-22T22:15:17Z",
    "title_canon_sha256": "7d3939a8c16589badf968293e680291c80346cbea65bfe680af60cac8a9b7e58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07341",
    "kind": "arxiv",
    "version": 1
  }
}