Pith Number

pith:7FQLCA3K

pith:2017:7FQLCA3KNGC4CDC3H3XXNROSMK

not attested not anchored not stored refs pending

Optimal discrimination of optical coherent states cannot always be realized by interfering with coherent light, photon counting, and feedback

Kenji Nakahira, Kentaro Kato, Tsuyoshi Sasaki Usuda

arxiv:1706.02125 v2 · 2017-06-07 · 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{7FQLCA3KNGC4CDC3H3XXNROSMK}

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	2026-05-18T00:23:16.833909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f960b1036a6985c10c5b3eef76c5d2629d688c5d0893823db00ff815206f2833

Aliases

arxiv: 1706.02125 · arxiv_version: 1706.02125v2 · doi: 10.48550/arxiv.1706.02125 · pith_short_12: 7FQLCA3KNGC4 · pith_short_16: 7FQLCA3KNGC4CDC3 · pith_short_8: 7FQLCA3K

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/7FQLCA3KNGC4CDC3H3XXNROSMK \
  | 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: f960b1036a6985c10c5b3eef76c5d2629d688c5d0893823db00ff815206f2833

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51ab1ada8836c9f5640cca1605dd8f14db778b8f8956c66da0d696759acbdf1c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-06-07T10:57:02Z",
    "title_canon_sha256": "99621caa6bc0f4e96404b1b4039586f9bb06ca1b0c9d79b2e012c1cc4a897db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.02125",
    "kind": "arxiv",
    "version": 2
  }
}