Pith Number

pith:QQP644NY

pith:2018:QQP644NYCGFC3UREHOL7EW7CFC

not attested not anchored not stored refs pending

Quantum Fisher information for general spatial deformations of quantum emitters

Jasminder S. Sidhu, Pieter Kok

arxiv:1802.01601 v1 · 2018-02-05 · 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{QQP644NYCGFC3UREHOL7EW7CFC}

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

Geometric obstructions to quadratic time scaling in multiparameter quantum estimation

Receipt and verification

First computed	2026-05-18T00:24:21.907058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

841fee71b8118a2dd2243b97f25be2288e80977958cf6903f945603047c5bb5d

Aliases

arxiv: 1802.01601 · arxiv_version: 1802.01601v1 · doi: 10.48550/arxiv.1802.01601 · pith_short_12: QQP644NYCGFC · pith_short_16: QQP644NYCGFC3URE · pith_short_8: QQP644NY

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/QQP644NYCGFC3UREHOL7EW7CFC \
  | 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: 841fee71b8118a2dd2243b97f25be2288e80977958cf6903f945603047c5bb5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79068c2d3e48b2c55910e81020cdb2b7d9d745cd6fb5992c0ffcd792a2840ae0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-02-05T19:01:34Z",
    "title_canon_sha256": "f68c177f6b4022174134d390d39965d78e3b6b9f45f2ba800697caf802f83304"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01601",
    "kind": "arxiv",
    "version": 1
  }
}