Pith Number

pith:4XYUMTQN

pith:2009:4XYUMTQNDFGHPZ4U4OUBF56RIN

not attested not anchored not stored refs pending

Quantum non-demolition measurements of a qubit coupled to a harmonic oscillator

Guido Burkard, Luca Chirolli

arxiv:0906.0906 v2 · 2009-06-04 · cond-mat.mes-hall · cond-mat.supr-con · 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{4XYUMTQNDFGHPZ4U4OUBF56RIN}

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	2026-05-18T02:13:29.021876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5f1464e0d194c77e794e3a812f7d143780e948cddc05eea50a8ea758af7234c

Aliases

arxiv: 0906.0906 · arxiv_version: 0906.0906v2 · doi: 10.48550/arxiv.0906.0906 · pith_short_12: 4XYUMTQNDFGH · pith_short_16: 4XYUMTQNDFGHPZ4U · pith_short_8: 4XYUMTQN

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/4XYUMTQNDFGHPZ4U4OUBF56RIN \
  | 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: e5f1464e0d194c77e794e3a812f7d143780e948cddc05eea50a8ea758af7234c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca32202f37edd4cf06ed61fc0f868d0d6db67a9ae3d63c5716564517d26cf466",
    "cross_cats_sorted": [
      "cond-mat.supr-con",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2009-06-04T13:07:11Z",
    "title_canon_sha256": "21b0e9e1265f698f8972a5de63ba6f5afab1c7e049ed99ea42dd9a2f9b2e6e3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0906",
    "kind": "arxiv",
    "version": 2
  }
}