Pith Number

pith:XNWOI4RQ

pith:2013:XNWOI4RQVGDYL2ORXPTPBDM6NP

not attested not anchored not stored refs pending

Quantum enhanced metrology in the presence of arbitrary loss

A.B. Young, B. Bell, C.Y. Hu, J.G. Rarity

arxiv:1305.3357 v2 · 2013-05-15 · 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{XNWOI4RQVGDYL2ORXPTPBDM6NP}

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	2026-05-18T03:21:53.506300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb6ce47230a98785e9d1bbe6f08d9e6bfef993d7e2950028b6c51198da364c1f

Aliases

arxiv: 1305.3357 · arxiv_version: 1305.3357v2 · doi: 10.48550/arxiv.1305.3357 · pith_short_12: XNWOI4RQVGDY · pith_short_16: XNWOI4RQVGDYL2OR · pith_short_8: XNWOI4RQ

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/XNWOI4RQVGDYL2ORXPTPBDM6NP \
  | 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: bb6ce47230a98785e9d1bbe6f08d9e6bfef993d7e2950028b6c51198da364c1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96c5423f896e9d9819d7e09b3fd55c31193109e5d56836bb45c6e38b1158de81",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-05-15T05:40:21Z",
    "title_canon_sha256": "ebcaae36d5d5d84b3211d8d4621f9d92555f2859409ccf76ad5b35430662e878"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3357",
    "kind": "arxiv",
    "version": 2
  }
}