Pith Number

pith:LW2NVMOF

pith:2021:LW2NVMOFLLE2NEQZZDTUY7KC3P

not attested not anchored not stored refs pending

Characterizing quantum instruments: from non-demolition measurements to quantum error correction

Alexander Erhard, Davide Vodola, Lukas Postler, Markus M\"uller, Martin Ringbauer, Michael Meth, Philipp Schindler, Rainer Blatt, Roman Stricker, Thomas Monz

arxiv:2110.06954 v1 · 2021-10-13 · 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{LW2NVMOFLLE2NEQZZDTUY7KC3P}

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	2026-07-05T05:12:26.498108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5db4dab1c55ac9a69219c8e74c7d42dbc99e3aed11eb51c8e0733d330be7c555

Aliases

arxiv: 2110.06954 · arxiv_version: 2110.06954v1 · doi: 10.48550/arxiv.2110.06954 · pith_short_12: LW2NVMOFLLE2 · pith_short_16: LW2NVMOFLLE2NEQZ · pith_short_8: LW2NVMOF

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/LW2NVMOFLLE2NEQZZDTUY7KC3P \
  | 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: 5db4dab1c55ac9a69219c8e74c7d42dbc99e3aed11eb51c8e0733d330be7c555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92fb9c89f142ac07246225651003258237f470e729a8d8643d2dc2de6ca39eca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-10-13T18:00:13Z",
    "title_canon_sha256": "e4d0d6f498dde7d715d1d0eb85c88d7fb4fa8da2f546fe69c5aa121ed9b295c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.06954",
    "kind": "arxiv",
    "version": 1
  }
}