Pith Number

pith:TWPDUMUG

pith:2018:TWPDUMUGURDSAGPIRFKLMTDEN4

not attested not anchored not stored refs pending

Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources

Jacob Gade Koefoed, Jesper Bjerge Christensen, Karsten Rottwitt, Lars Hagedorn Frandsen, Leif Katsuo Oxenlowe, Mikkel Heuck, Yunhong Ding

arxiv:1811.11741 v1 · 2018-11-28 · 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{TWPDUMUGURDSAGPIRFKLMTDEN4}

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	2026-05-17T23:45:32.615023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d9e3a3286a4472019e88954b64c646f2c72b0b9d9428ab5ac168460b2ef4919

Aliases

arxiv: 1811.11741 · arxiv_version: 1811.11741v1 · doi: 10.48550/arxiv.1811.11741 · pith_short_12: TWPDUMUGURDS · pith_short_16: TWPDUMUGURDSAGPI · pith_short_8: TWPDUMUG

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/TWPDUMUGURDSAGPIRFKLMTDEN4 \
  | 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: 9d9e3a3286a4472019e88954b64c646f2c72b0b9d9428ab5ac168460b2ef4919

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0b7e45f9866dbf5430cbb9bafde577460c0122b40060ccae5b1af0bfbe457bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-11-28T18:54:39Z",
    "title_canon_sha256": "049f4bbccaf8f14dca5c816be2e2e253088714013e69d482b9530dcab64a7a46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11741",
    "kind": "arxiv",
    "version": 1
  }
}