Qubit Gap Is an Energy Ledger - Ion-Trap Qubits: Sidebands, Shared Modes, and Fluorescence Readout Step by Step

Internal levels define a checked energy gap. 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 qubit gap is the upper energy minus the lower energy

The lower level is 0 joules and the upper level is 8 joules.

8\ -\ 0=8\ \text{J}

The drive ledger must cite the checked gap

The checked internal gap is 8 joules; it is not a caption-only number.

\Delta E_{\text{qubit}}=8\ \text{J}