  Mid-circuit measurement and reset are crucial primitives in quantum
computation, but such operations require strong interactions with selected
qubits while maintaining isolation of neighboring qubits, which is a
significant challenge in many systems. For trapped ion systems, measurement is
performed with laser-induced fluorescence. Stray light from the detection beam
and fluorescence from the measured ions can be significant sources of
decoherence for unmeasured qubits. We present a technique using ion micromotion
to reduce these sources of decoherence by over an order of magnitude. We
benchmark the performance with a new method, based on randomized benchmarking,
to estimate the magnitude of crosstalk errors on nearby qubits. Using the
Honeywell System Model H0, we demonstrate measurement and reset on select
qubits with low crosstalk errors on neighboring qubits.
