Bright-state fluorescence is a checked threshold result. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

The readout cites a checked internal state

The cited state bit is 1 before the photon count is interpreted.

bstate=1b_{\text{state}}=1
Bright-state fluorescence sourceThe readout state comes from the trap ledger.lowerEnergy=0 JupperEnergy=8 JqubitGap=8 JpacketIndex=2 packetmodeSpacing=2 JmotionalEnergy=4 JreadoutBit=1 bit

Bright state crosses the count threshold

The count is 12 against threshold 10, giving result bit 1.

1210112\ge 10\Rightarrow 1
Bright-state fluorescenceThe count, threshold, and result are checked together.photonCount=12 countthreshold=10 countresultBit=1 bit