Pith Number

pith:PPNLMQKK

pith:2021:PPNLMQKKVWCNJOIPTYCWZRGMH6

not attested not anchored not stored refs pending

Room-temperature on-chip generation of heralded single photons with switchable orbital angular momentum

Fang Liu, Kaiyu Cui, Shan Zhang, Wei Zhang, Xue Feng, Yidong Huang

arxiv:2111.05594 v2 · 2021-11-10 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPNLMQKKVWCNJOIPTYCWZRGMH6}

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	2026-07-05T04:59:38.870860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bdab6414aad84d4b90f9e056cc4cc3f905fc7cfc404ff87b8e7c479951801d9

Aliases

arxiv: 2111.05594 · arxiv_version: 2111.05594v2 · doi: 10.48550/arxiv.2111.05594 · pith_short_12: PPNLMQKKVWCN · pith_short_16: PPNLMQKKVWCNJOIP · pith_short_8: PPNLMQKK

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/PPNLMQKKVWCNJOIPTYCWZRGMH6 \
  | 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: 7bdab6414aad84d4b90f9e056cc4cc3f905fc7cfc404ff87b8e7c479951801d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b10e920dd24159c685b2a9cbd179287d6c8e99b5b732cdd5316da0a93c34f966",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-10T09:36:42Z",
    "title_canon_sha256": "94af6d33dc8e19e1336643fe25cededf6f1aa08ece86de8f696ceda735b84c3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.05594",
    "kind": "arxiv",
    "version": 2
  }
}