Pith Number

pith:LXSS3DL6

pith:2026:LXSS3DL6CRGESF7UZJKHWRMHE5

not attested not anchored not stored refs pending

Practical Limits to Single-Mode Vacuum Squeezing in a SNAIL Parametric Amplifier

Archana Kamal, Debsuvra Mukhopadhyay, Haley Cole, Josiah Cochran, Shyam Shankar, Theodore Shaw, Zhuoqun Hao

In practical SNAIL parametric amplifiers, resonator and microwave-chain losses limit single-mode vacuum squeezing far more than Kerr nonlinearity.

arxiv:2603.14123 v3 · 2026-03-14 · quant-ph

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\usepackage{pith}
\pithnumber{LXSS3DL6CRGESF7UZJKHWRMHE5}

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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.

Claims

C1strongest claim

squeezing was dominated by internal resonator loss and insertion loss in the microwave chain. These results indicate that, in practical SPAs, reducing loss, rather than suppressing Kerr, is the primary route to improved squeezing performance.

C2weakest assumption

The explored range of external flux and pump power covers the operating points actually used in sensing and qubit-readout experiments, and the theoretical model accurately predicts Kerr minimization without unaccounted higher-order effects.

C3one line summary

In practical SNAIL parametric amplifiers, achievable vacuum squeezing is limited by internal resonator loss and microwave chain insertion loss rather than Kerr nonlinearity.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:05:43.279868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5de52d8d7e144c4917f4ca547b4587275e5cce40482d0e6209b890841b224e1e

Aliases

arxiv: 2603.14123 · arxiv_version: 2603.14123v3 · doi: 10.48550/arxiv.2603.14123 · pith_short_12: LXSS3DL6CRGE · pith_short_16: LXSS3DL6CRGESF7U · pith_short_8: LXSS3DL6

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/LXSS3DL6CRGESF7UZJKHWRMHE5 \
  | 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: 5de52d8d7e144c4917f4ca547b4587275e5cce40482d0e6209b890841b224e1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22406bdce37646ea19d0fbfbe0c85a79d8bf57fae42ab21633da0eb62acae491",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-03-14T21:22:24Z",
    "title_canon_sha256": "90ecbc2d47448173e0e5100b6abf77a3e6d22b2e2bb3cf352bd375681c80b62d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.14123",
    "kind": "arxiv",
    "version": 3
  }
}