Presenter:

Authors:

Alexandre Blais(Institut quantique and Départment de Physique, Université de Sherbrooke)

Karl Petersson(Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen)

Logical readout of Majorana qubits is a key primitive in approaches to topological quantum computing based on Majorana zero modes. The qubit readout protocol should be fast, high fidelity and, ideally, quantum non-demolition. The readout scheme should also be scalable and involve minimal device complexity. We present a readout protocol that is promising with respect to all these desiderata. The measurement is based on parametric modulation of the light-matter coupling between a microwave resonator and a pair of overlapping Majorana wave-functions.