Pith Number

pith:6KJ77345

pith:2026:6KJ77345G4HTBMEDTPOJNDFK6F

not attested not anchored not stored refs pending

Below-shot-noise capacity in phase estimation using nonlinear interferometers

Alejandra A. Padilla, Cristofero Oglialoro, Daniel F. Urrego, Enno Giese, Felix Farsch, Gerard J. Machado, Ian A. Walmsley, Juan P. Torres, Markus Gr\"afe, Raj B. Patel

arxiv:2601.04139 v2 · 2026-01-07 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6KJ77345G4HTBMEDTPOJNDFK6F}

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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

Improving the loss threshold for quantum advantage in photonic sensors by complete photon counting

Receipt and verification

First computed	2026-08-04T02:39:56.848863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f293ffef9d370f30b0839bdc968caaf1708251eb72c6e3c729d3e055515b80f6

Aliases

arxiv: 2601.04139 · arxiv_version: 2601.04139v2 · doi: 10.48550/arxiv.2601.04139 · pith_short_12: 6KJ77345G4HT · pith_short_16: 6KJ77345G4HTBMED · pith_short_8: 6KJ77345

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/6KJ77345G4HTBMEDTPOJNDFK6F \
  | 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: f293ffef9d370f30b0839bdc968caaf1708251eb72c6e3c729d3e055515b80f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7532a614e4f018a741a355faff860a2985e4ef0b0d01fe8a08d74faf229fe806",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-01-07T17:51:52Z",
    "title_canon_sha256": "a68e05d0d2ce7682211728ef18a3ec57d8e673378203925166a41309e22caa67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.04139",
    "kind": "arxiv",
    "version": 2
  }
}