// QORCH T4.2

Inter-vendor state transfer, modeled not advertised.

QORCH T4.2 takes a transfer scenario and returns quantitative fidelity, latency, cost estimates. Proceed, redesign, reject.

Supported scenarios

Single-link

Source A to fiber to Target B

Compute fidelity, latency, cost.

Multi-hop

Source A to repeater to Target B

Compute across one or more repeater nodes.

Entanglement-distribution

Entanglement pumping across N repeaters

Compute entanglement rate vs link-loss budget.

Decoder-tail-latency

End-to-end feedback budget

Compute classical decoder latency plus feedback round-trip.

Output schema

{
  "fidelity": 0.94,
  "latency_us": 1280,
  "entanglement_rate_hz": 2400,
  "link_loss_db": 14.2,
  "qec_overhead": 13.0,
  "cost_per_logical_op_usd": 0.018,
  "verdict": "proceed"
}

Output fields

fidelity

End-to-end state-transfer fidelity, 0-1

latency_us

One-way transfer latency in microseconds

entanglement_rate_hz

Entanglement attempts per second

link_loss_db

Total link-loss budget in dB

qec_overhead

QEC logical-to-physical ratio

cost_per_logical_op_usd

USD per logical operation

verdict

proceed / redesign / reject

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