  Cavity quantum electrodynamics (QED), the study of the interaction between
quantized emitters and photons confined in an optical cavity, is an important
tool for quantum science in computing, networking, and synthetic matter. In
atomic cavity QED, this approach typically relies upon an ultra-high vacuum
chamber that hosts a cold trapped atomic ensemble and an optical cavity.
Upgrading the cavity necessitates a months-long laborious process of removing
external optics, venting, replacing the resonator, baking, and replacing
optics, constituting a substantial bottleneck to innovation in resonator
design. In this work, we demonstrate that the flexibility of optical cavities,
and the quick turnaround time in switching between them, can be restored with
the vacuum loadlock technique--reducing the cycle time to install a cavity,
bake it, and transport it into the science chamber to days, achieving
3x10^(-10) Torr pressure in the science chamber. By reducing vacuum
limitations, this approach is particularly powerful for labs interested in
quickly exploring novel optic cavities, or any other atomic physics relying on
in-vacuum optics.
