Abstract

The capability to perform parity-type measurements is a central ingredient of any fault-tolerant quantum computation architecture with protected qubits. We propose schemes to achieve continuous and quantum non-demolition measurements of a class of parity-type observables for the so-called cat-qubits. While opening new perspectives towards fault-tolerant quantum information processing with superconducting circuits, this work also explores a new regime of non-linear interactions provided by a high-impedance Josephson circuit.

© 2017 Optical Society of America