  We present an analog quantum simulator of spacetimes containing traversable
wormholes. A suitable spatial dependence in the external bias of a dc-SQUID
array mimics the propagation of light in a 1D wormhole background. The
impedance of the array places severe limitations on the type of spacetime that
we are able to implement. However, we find that wormhole throat radius in the
sub-mm range are achievable. We show how to modify this spacetime in order to
allow the existence of closed timelike curves. The quantum fluctuations of the
phase associated to the finite array impedance might be seen as an analogue of
Hawking's chronology protection mechanism.
