  Quantum systems are notoriously difficult to simulate with classical means.
Recently, the idea of using another quantum system - which is experimentally
more controllable - as a simulator for the original problem has gained
significant momentum. Amongst the experimental platforms studied as quantum
simulators, superconducting qubits are one of the most promising, due to
relative straightforward scalability, easy design, and integration with
standard electronics. Here I review the recent state-of-the art in the field
and the prospects for simulating systems ranging from relativistic quantum
fields to quantum many-body systems.
