The shared motional mode is a cited packet ledger. 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 2.

222\to 2
Two ions share one mode driveThe drive packet update is checked first.driveEnergy=8 JstartPacket=2 packetendPacket=2 packetmatchedBit=1 bitacceptedBit=1 bit

Two ion labels cite one shared motional packet without changing it

Ion A cites the same shared packet ledger, ending at packet 2.

nshared:22n_{\text{shared}}:2\to 2
Two ions share one modeThe shared-mode check cites the drive and trap source.driveEnergy=8 JstartPacket=2 packetendPacket=2 packetmatchedBit=1 bitacceptedBit=1 bitionA=AionB=BaddressedIon=AstartPacket=2 packetendPacket=2 packetacceptedBit=1 bit