Pith Number

pith:AMRRJCON

pith:2025:AMRRJCONNVBYVVU2FGYOAWK4SB

not attested not anchored not stored refs pending

Experimental signatures of a $\hat{Z}\hat{X}$ beam-splitter interaction between a Kerr-cat and transmon qubit

Aikaterini Kargioti, Haley M. Cole, Hebah Goderya, Josiah Cochran, Shyam Shankar, Theo Shaw, Yao-Chun Chang, Zhuoqun Hao

A beamsplitter interaction between a Kerr-cat qubit and transmon realizes an effective Z_cat X_q coupling for parity measurements.

arxiv:2511.21972 v3 · 2025-11-26 · quant-ph

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\usepackage{pith}
\pithnumber{AMRRJCONNVBYVVU2FGYOAWK4SB}

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Record completeness

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2 Internet Archive

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4 Citations open

5 Replications open

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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.

Claims

C1strongest claim

Here, we experimentally demonstrate a beamsplitter interaction between a KCQ and a transmon, realizing an effective Z_cat X_q coupling that can be employed for parity measurements in QEC protocols.

C2weakest assumption

The observed interaction rates across cat sizes and drive amplitudes arise purely from the intended beamsplitter term without significant contributions from unwanted couplings, drive-induced decoherence, or calibration offsets that could mimic the expected scaling.

C3one line summary

Experimental demonstration of Z_cat X_q beamsplitter interaction between Kerr-cat and transmon qubits for syndrome extraction in QEC.

Receipt and verification

First computed	2026-05-17T23:39:17.005276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03231489cd6d438ad69a29b0e0595c9073df3e0dd819588e2f890bc4f39ba72d

Aliases

arxiv: 2511.21972 · arxiv_version: 2511.21972v3 · doi: 10.48550/arxiv.2511.21972 · pith_short_12: AMRRJCONNVBY · pith_short_16: AMRRJCONNVBYVVU2 · pith_short_8: AMRRJCON

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/AMRRJCONNVBYVVU2FGYOAWK4SB \
  | 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: 03231489cd6d438ad69a29b0e0595c9073df3e0dd819588e2f890bc4f39ba72d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5634cd60388f368da8c502c870d16d34495af0ad25131534584a1cb5eb077308",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-11-26T23:11:55Z",
    "title_canon_sha256": "c17410168f8cf400810725dddf950b9d285ad323fbc3e136bd1d71ce80e45cd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.21972",
    "kind": "arxiv",
    "version": 3
  }
}