Pith Number

pith:MW5LERIM

pith:2026:MW5LERIMRVG6CCLVUHPIQSM77P

not attested not anchored not stored refs pending

Heisenberg-scaling characterization of a two-channel optical network via two-port homodyne detection

Atmadev Rai, Paolo Facchi, Vincenzo Tamma

arxiv:2603.20139 v2 · 2026-03-20 · 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{MW5LERIMRVG6CCLVUHPIQSM77P}

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	2026-07-07T02:18:38.136026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65bab2450c8d4de10975a1de88499ffbc0086457121083f20a7e7ca3d70b825c

Aliases

arxiv: 2603.20139 · arxiv_version: 2603.20139v2 · doi: 10.48550/arxiv.2603.20139 · pith_short_12: MW5LERIMRVG6 · pith_short_16: MW5LERIMRVG6CCLV · pith_short_8: MW5LERIM

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/MW5LERIMRVG6CCLVUHPIQSM77P \
  | 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: 65bab2450c8d4de10975a1de88499ffbc0086457121083f20a7e7ca3d70b825c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61926bec418e4fd527e2a53de24e69502d57f374948dcc787516d8c26b8aa037",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-03-20T17:11:03Z",
    "title_canon_sha256": "1482e1bb1bfe52a559cc1ecfbc046152e94975dd4f4b383026b75f9ed0a54490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.20139",
    "kind": "arxiv",
    "version": 2
  }
}