Pith Number

pith:KQRT4SY4

pith:2021:KQRT4SY4Z5IS2NP6T4GJ7BCZEY

not attested not anchored not stored refs pending

Highly efficient polarization-entangled photon-pair generation in lithium niobate waveguides based on bound states in the continuum

Guang-Yuan Chen, Xiang-Dong Zhang, Yu-hui Chen, Zhi-Xin Li

arxiv:2103.05323 v1 · 2021-03-09 · 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{KQRT4SY4Z5IS2NP6T4GJ7BCZEY}

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	2026-07-05T02:33:30.559010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54233e4b1ccf512d35fe9f0c9f8459261bf80ef76bb5844e571b648e23d62e09

Aliases

arxiv: 2103.05323 · arxiv_version: 2103.05323v1 · doi: 10.48550/arxiv.2103.05323 · pith_short_12: KQRT4SY4Z5IS · pith_short_16: KQRT4SY4Z5IS2NP6 · pith_short_8: KQRT4SY4

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/KQRT4SY4Z5IS2NP6T4GJ7BCZEY \
  | 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: 54233e4b1ccf512d35fe9f0c9f8459261bf80ef76bb5844e571b648e23d62e09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "787a738743952347a2baeb115b5fd5f53b04b27976ac39849353be5c8bfe5759",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-03-09T10:04:15Z",
    "title_canon_sha256": "173749b9ef0491e5520e10aa2aab6fe1ef7bdeca5aabf3bb3263199a859212f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.05323",
    "kind": "arxiv",
    "version": 1
  }
}