Pith Number

pith:QUMKSYXG

pith:2017:QUMKSYXGE6UIGJZPBRHW7YFL7B

not attested not anchored not stored refs pending

SPDC in ppLN ridge waveguide: an analysis for efficient twin photon generation at 1550 nm

Joyee Ghosh, Ramesh Kumar

arxiv:1709.09456 v3 · 2017-09-27 · 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{QUMKSYXGE6UIGJZPBRHW7YFL7B}

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	2026-05-18T00:09:30.730456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8518a962e627a883272f0c4f6fe0abf85573bc63b0e0e5ae83565778eee365b1

Aliases

arxiv: 1709.09456 · arxiv_version: 1709.09456v3 · doi: 10.48550/arxiv.1709.09456 · pith_short_12: QUMKSYXGE6UI · pith_short_16: QUMKSYXGE6UIGJZP · pith_short_8: QUMKSYXG

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/QUMKSYXGE6UIGJZPBRHW7YFL7B \
  | 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: 8518a962e627a883272f0c4f6fe0abf85573bc63b0e0e5ae83565778eee365b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "beebe9b641ee3a8abe604d3f42ad80d8a12006f2fa39c3d0609ffe47f3683fb0",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-09-27T11:30:03Z",
    "title_canon_sha256": "ddbc808a0f6d608e544302718d741b7a6e5f4084a2d43b607ebf9abd64b3edbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09456",
    "kind": "arxiv",
    "version": 3
  }
}