Pith Number

pith:IQ7M4VM2

pith:2025:IQ7M4VM23MMZJUQMYY7WBRFQTN

not attested not anchored not stored refs pending

Bayesian frequency estimation at the fundamental quantum limit

Ethan Payne, James W. Gardner, Joseph J. Hope, Lee McCuller, Sander M. Vermeulen, Simon A. Haine, Su Direkci, Tuvia Gefen, Yanbei Chen

arxiv:2507.02811 v2 · 2025-07-03 · quant-ph · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQ7M4VM23MMZJUQMYY7WBRFQTN}

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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

Extending the dynamic range in quantum frequency estimation with sequential weak measurements

Receipt and verification

First computed	2026-07-05T11:44:50.836447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

443ece559adb1994d20cc63f60c4b09b6927cdd458bd747abacce6064a24d6b0

Aliases

arxiv: 2507.02811 · arxiv_version: 2507.02811v2 · doi: 10.48550/arxiv.2507.02811 · pith_short_12: IQ7M4VM23MMZ · pith_short_16: IQ7M4VM23MMZJUQM · pith_short_8: IQ7M4VM2

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/IQ7M4VM23MMZJUQMYY7WBRFQTN \
  | 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: 443ece559adb1994d20cc63f60c4b09b6927cdd458bd747abacce6064a24d6b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "667d5f5cdb4e6fd30400823b7cbc6160fae0f7be84320abd0230ede89b03b4b9",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-07-03T17:20:31Z",
    "title_canon_sha256": "44fab590ac942aab28db4e18d842085e5f896cb58dffd0b86f999070ad2d3854"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.02811",
    "kind": "arxiv",
    "version": 2
  }
}