Pith Number

pith:POKQISFJ

pith:2019:POKQISFJZV7LXAEDH333LGF6HM

not attested not anchored not stored refs pending

Using states with a large photon number variance to increase quantum Fisher information in single-mode phase estimation

Carsten Rockstuhl, Changhun Oh, Changhyoup Lee, Hyunseok Jeong, Su-Yong Lee

arxiv:1907.06349 v2 · 2019-07-15 · 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{POKQISFJZV7LXAEDH333LGF6HM}

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	2026-07-05T00:27:17.682741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b950448a9cd7ebb80833ef7b598be3b332af38f627b76d48f25c68cfbb50f6c

Aliases

arxiv: 1907.06349 · arxiv_version: 1907.06349v2 · doi: 10.48550/arxiv.1907.06349 · pith_short_12: POKQISFJZV7L · pith_short_16: POKQISFJZV7LXAED · pith_short_8: POKQISFJ

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/POKQISFJZV7LXAEDH333LGF6HM \
  | 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: 7b950448a9cd7ebb80833ef7b598be3b332af38f627b76d48f25c68cfbb50f6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fedc7347d02f0ec5b469ac40ea9dfb5c316e9b8732d165179d14868c1402a4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-15T07:02:12Z",
    "title_canon_sha256": "d6bf624e4f52bfd04336e3d3138df2e41a9ba666416f4cb636577a5fddb372c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06349",
    "kind": "arxiv",
    "version": 2
  }
}