Leakage and Crosstalk

Retained Shots Feed Assignment

readout uses what remains

The assignment matrix acts on retained computational shots, not leaked shots. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Assignment uses retained computational shots

The retained computational total is 64 plus 16, or 80 shots.

64+16=8064+16=80
Retained shots feed assignmentThe prediction uses retained shots only.true probabilitieszero 4/5one 1/5assignmentobserved probszero 13/20one 7/20over 80 shots52 zero reads28 one reads

The retained ledger predicts observed reads

Assignment turns the retained ledger into 52 zero reads and 28 one reads.

Nread=(52,28)N_{\text{read}}=(52,28)
Readout after leakageLeaked shots are not counted as zero or one reads.true probabilitieszero 4/5one 1/5assignmentobserved probszero 13/20one 7/20over 80 shots52 zero reads28 one reads