  Circuit QED is a promising solid-state quantum computing architecture. It
also has excellent potential as a platform for quantum control -- especially
quantum feedback control -- experiments. However, the current scheme for
measurement in circuit QED is low efficiency and has low signal-to-noise ratio
for single shot measurements. The low quality of this measurement makes the
implementation of feedback difficult, and here we propose two schemes for
measurement in circuit QED architectures that can significantly improve
signal-to-noise, and potentially achieve quantum limited measurement. Such
measurements would enable the implementation of quantum feedback protocols and
we illustrate this with a simple entanglement stabilization scheme.
