Pith Number

pith:O76S7DEU

pith:2009:O76S7DEUXCNHOHXHOQOGGUXY6A

not attested not anchored not stored refs pending

Quantum Optical Metrology -- The Lowdown on High-N00N States

Jonathan P. Dowling

arxiv:0904.0163 v1 · 2009-04-01 · 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{O76S7DEUXCNHOHXHOQOGGUXY6A}

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

Counterfactual Quantum Sensing: What Interaction-Free Measurement Can and Cannot Buy

Receipt and verification

First computed	2026-07-04T15:40:31.202683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77fd2f8c94b89a771ee7741c6352f8f01d5757aa81e17054077db291170e4911

Aliases

arxiv: 0904.0163 · arxiv_version: 0904.0163v1 · doi: 10.48550/arxiv.0904.0163 · pith_short_12: O76S7DEUXCNH · pith_short_16: O76S7DEUXCNHOHXH · pith_short_8: O76S7DEU

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/O76S7DEUXCNHOHXHOQOGGUXY6A \
  | 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: 77fd2f8c94b89a771ee7741c6352f8f01d5757aa81e17054077db291170e4911

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed34fb2240d0d12b720db7b61d40e5a99a044eb5384f95f36059de6b46c6754d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-04-01T14:05:08Z",
    "title_canon_sha256": "000ebd7188498ce8316654cf89b2443f38532ba785c02f45567f944410e6ac84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0163",
    "kind": "arxiv",
    "version": 1
  }
}