  Shortcuts to adiabaticity (STA) are powerful quantum control methods,
allowing quick evolution into target states of otherwise slow adiabatic
dynamics. Such methods have widespread applications in quantum technologies,
and various STA protocols have been demonstrated in closed systems. However,
realizing STA for open quantum systems has presented a greater challenge, due
to complex controls required in existing proposals. Here we present the first
experimental demonstration of STA for open quantum systems, using a
superconducting circuit QED system consisting of two coupled bosonic
oscillators and a transmon qubit. By applying a counterdiabatic driving pulse,
we reduce the adiabatic evolution time of a single lossy mode from 800 ns to
100 ns. In addition, we propose and implement an optimal control protocol to
achieve fast and qubit-unconditional equilibrium of multiple lossy modes. Our
results pave the way for accelerating dynamics of open quantum systems and have
potential applications in designing fast open-system protocols of physical and
interdisciplinary interest, such as accelerating bioengineering and chemical
reaction dynamics.
