Pith Number

pith:KARB6VZN

pith:2018:KARB6VZNQPKEXGGDZQVKJNVG4U

not attested not anchored not stored refs pending

Direct generation of frequency-bin entangled photons via two-period quasi-phase-matched parametric downconversion

Fumihiro Kaneda, Hirofumi Suzuki, Keiichi Edamatsu, Ryosuke Shimizu

arxiv:1810.02052 v1 · 2018-10-04 · 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{KARB6VZNQPKEXGGDZQVKJNVG4U}

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	2026-05-17T23:55:34.080343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50221f572d83d44b98c3cc2aa4b6a6e5159b20bb4c4338b2db279c17860f710f

Aliases

arxiv: 1810.02052 · arxiv_version: 1810.02052v1 · doi: 10.48550/arxiv.1810.02052 · pith_short_12: KARB6VZNQPKE · pith_short_16: KARB6VZNQPKEXGGD · pith_short_8: KARB6VZN

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/KARB6VZNQPKEXGGDZQVKJNVG4U \
  | 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: 50221f572d83d44b98c3cc2aa4b6a6e5159b20bb4c4338b2db279c17860f710f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cac045b0ca0d587c38a58fd437ec189fd4371a473e6f5af9bf9ffbd834c51a73",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-10-04T04:35:52Z",
    "title_canon_sha256": "34aa190893eadd776d71ca2f9096e71bb0e110d1aa44d4c877fa8d25d5f5bf66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.02052",
    "kind": "arxiv",
    "version": 1
  }
}