The other ion cites the same shared mode contract. 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 addressed ion uses a checked drive

The drive starts from packet 2 and ends at packet 3.

232\to 3
Blue sideband updates shared mode driveThe drive packet update is checked first.driveEnergy=10 JstartPacket=2 packetendPacket=3 packetmatchedBit=1 bitacceptedBit=1 bit

A blue sideband on ion B raises the same shared packet

Ion B cites the same shared packet ledger, ending at packet 3.

nshared:23n_{\text{shared}}:2\to 3
Blue sideband updates shared modeThe shared-mode check cites the drive and trap source.driveEnergy=10 JstartPacket=2 packetendPacket=3 packetmatchedBit=1 bitacceptedBit=1 bitionA=AionB=BaddressedIon=BstartPacket=2 packetendPacket=3 packetacceptedBit=1 bit