Stabilized Cat in a Driven Nonlinear Cavity: A Fault-Tolerant Error Syndrome Detector
Stabilized Cat in a Driven Nonlinear Cavity: A Fault-Tolerant Error Syndrome Detector
In quantum error correction, information is encoded in a high-dimensional system to protect it from the environment. A crucial step is to use natural, two-body operations with an ancilla to extract information about errors without causing backaction on the encoded information. Essentially, ancilla errors must not propagate to the encoded …