  Strontium clock atom interferometry is a promising new technique, with
multiple experiments under development to explore its potential for dark matter
and gravitational wave detection. In these detectors, large momentum transfer
(LMT) using sequences of many laser pulses is necessary, and thus high fidelity
of each pulse is important since small infidelities become magnified. Quantum
Optimal Control (QOC) is a framework for developing control pulse waveforms
that achieve high fidelity and are robust against experimental imperfections.
Resonant single-photon transitions using the narrow clock transition of
strontium involve significantly different quantum dynamics than more
established atom interferometry methods based on far-detuned two-photon Raman
or Bragg transitions, which leads to new opportunities and challenges when
applying QOC. Here, we study QOC pulses for strontium clock interferometry and
demonstrate their advantage over basic square pulses (primitive pulses) and
composite pulses in terms of robustness against multiple noise channels. This
could improve the scale of large momentum transfer in Sr clock interferometers,
paving the way to achieve these scientific goals.
