  Most proof-of-principle experiments for spin qubits have been performed using
GaAs-based quantum dots because of the excellent control they offer over
tunneling barriers and the orbital and spin degrees of freedom. Here, we
present the first realization of high-quality single and double quantum dots
hosted in an InAs two-dimensional electron gas (2DEG), demonstrating accurate
control down to the few-electron regime, where we observe a clear Kondo effect
and singlet-triplet spin blockade. We measure an electronic $g$-factor of $16$
and a typical magnitude of the random hyperfine fields on the dots of $\sim
0.6\, \mathrm{mT}$. We estimate the spin-orbit length in the system to be $\sim
5-10\, \mu \mathrm{m}$, which is almost two orders of magnitude longer than
typically measured in InAs nanostructures, achieved by a very symmetric design
of the quantum well. These favorable properties put the InAs 2DEG on the map as
a compelling host for studying fundamental aspects of spin qubits. Furthermore,
having weak spin-orbit coupling in a material with a large Rashba coefficient
potentially opens up avenues for engineering structures with spin-orbit
coupling that can be controlled locally in space and/or time.
