Pith Number

pith:PJ22HZQW

pith:2019:PJ22HZQWHCAQUKAJJX3PT6FE73

not attested not anchored not stored refs pending

4-dB quadrature squeezing with fiber-coupled PPLN ridge waveguide module

Akira Furusawa, Koji Enbutsu, Naoto Takanashi, Ryoichi Kasahara, Takahiro Kashiwazaki, Takeshi Umeki, Takushi Kazama

arxiv:1906.09749 v2 · 2019-06-24 · 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{PJ22HZQWHCAQUKAJJX3PT6FE73}

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.

Cited by

1 paper in Pith

A Compact, Mobile, Low-Threshold Squeezed Light Source

Receipt and verification

First computed	2026-07-05T00:55:17.203997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a75a3e61638810a28094df6f9f8a4feef2f3b12c499aab348d3b2b7057be8bd

Aliases

arxiv: 1906.09749 · arxiv_version: 1906.09749v2 · doi: 10.48550/arxiv.1906.09749 · pith_short_12: PJ22HZQWHCAQ · pith_short_16: PJ22HZQWHCAQUKAJ · pith_short_8: PJ22HZQW

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/PJ22HZQWHCAQUKAJJX3PT6FE73 \
  | 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: 7a75a3e61638810a28094df6f9f8a4feef2f3b12c499aab348d3b2b7057be8bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1825d7336fc8d95b37f5318be5788bf8753b87e94dcb7bb6187001d33a41c64d",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-06-24T07:04:03Z",
    "title_canon_sha256": "47d01cb1584743bd299d4fae4461d78435f0c5cd6fc8a79fecbdeeb862093899"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09749",
    "kind": "arxiv",
    "version": 2
  }
}