  We demonstrate the design of an integrated conditional quantum teleportation
circuit and a readout circuit using a two-dimensional photonic crystal single
chip. Fabrication and testing of the proposed quantum circuit can be
accomplished with current or near future semiconductor process technology and
experimental techniques. The readout part of our device, which has potential
for independent use as an atomic interferometer, can also be used on its own or
integrated with other compatible optical circuits to achieve atomic state
detection. Further improvement of the device in terms of compactness and
robustness could be achieved by integrating it with sources and detectors in
the optical regime.
