Pith Number

pith:X6XVLJLE

pith:2026:X6XVLJLESLL4MHOSLNOHP5DRNL

not attested not anchored not stored refs pending

Ion-atom two-qubit quantum gate based on phonon blockade

Bimalendu Deb, Subhra Mudli

A trapped ion and Rydberg atom form a CNOT gate through phonon blockade from their interaction.

arxiv:2602.19222 v3 · 2026-02-22 · quant-ph

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\pithnumber{X6XVLJLESLL4MHOSLNOHP5DRNL}

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Record completeness

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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

We theoretically demonstrate the universal two-qubit CNOT gate between an ionic and an atomic qubit relying on Rydberg excitation of the atom and the resulting phonon blockade in the motional states of the harmonically trapped ion. For realistic parameters, the gate fidelity is found to be about 90%.

C2weakest assumption

The ion-atom interaction becomes strong enough in the Rydberg state to produce a clean phonon blockade under realistic experimental conditions and harmonic trapping, without significant decoherence or leakage.

C3one line summary

A universal CNOT gate between ionic and atomic qubits is realized through Rydberg excitation inducing phonon blockade, achieving about 90% fidelity for realistic parameters.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-26T01:03:25.846531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfaf55a56492d7c61dd25b5c77f4716ad0895d0595cbe2e07e916c9097c8abce

Aliases

arxiv: 2602.19222 · arxiv_version: 2602.19222v3 · doi: 10.48550/arxiv.2602.19222 · pith_short_12: X6XVLJLESLL4 · pith_short_16: X6XVLJLESLL4MHOS · pith_short_8: X6XVLJLE

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/X6XVLJLESLL4MHOSLNOHP5DRNL \
  | 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: bfaf55a56492d7c61dd25b5c77f4716ad0895d0595cbe2e07e916c9097c8abce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "845be1a2a598924205016abd94b28158221560ceeb66100e39fda888c482cbb9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-02-22T15:09:43Z",
    "title_canon_sha256": "e74f50b86cce1a74d0c2b47c355d204f4ee858f1eb928502dd816829b045ae99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.19222",
    "kind": "arxiv",
    "version": 3
  }
}