Bit-flip error correction in a novel three-qubit superconducting circuit

We propose implementation of three-qubit bit-flip error correction protocol based on parity measurement using a novel three-qubit system called the ``trimon''. The pairwise longitudinal coupling between the three qubits enables simple encoding and decoding of the bit-flip error code. Further, the trimon device enables joint readout of the three-qubit state using standard dispersive readout in the 3D circuit-QED architecture. I will describe our dispersive readout technique and the procedure for implementing parity measurements without using ancilla-qubits. I will conclude by presenting some preliminary results and possibility of extending such techniques for other error-correcting codes. Reference: arXiv:1610.07915.