Pith Number

pith:6FNAEWPD

pith:2014:6FNAEWPDRJHHGFIMAISPPHDCJ6

not attested not anchored not stored refs pending

Direct Schmidt number measurement of high-gain parametric down conversion

G. Leuchs, I. V. Dyakonov, P. R. Sharapova, T. Sh. Iskhakov

arxiv:1405.6158 v1 · 2014-05-23 · 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{6FNAEWPDRJHHGFIMAISPPHDCJ6}

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	2026-05-18T02:51:13.952395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f15a0259e38a4e73150c0224f79c624f9d617b190609a4ddd7d68df53e633bb8

Aliases

arxiv: 1405.6158 · arxiv_version: 1405.6158v1 · doi: 10.48550/arxiv.1405.6158 · pith_short_12: 6FNAEWPDRJHH · pith_short_16: 6FNAEWPDRJHHGFIM · pith_short_8: 6FNAEWPD

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/6FNAEWPDRJHHGFIMAISPPHDCJ6 \
  | 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: f15a0259e38a4e73150c0224f79c624f9d617b190609a4ddd7d68df53e633bb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a6277548c17b34ad377a9d5e439274cc14b4519835b181f0fbe2ba0212db38b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-05-23T18:25:47Z",
    "title_canon_sha256": "19b7abd60430b438bbad173be28b7e6bac5134e8613ee0307970a9dbc3bebd31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6158",
    "kind": "arxiv",
    "version": 1
  }
}