FisMat2017 - Submission - View

Abstract's title: Quantum control of noisy hybrid quantum networks
Submitting author: Elisabetta Paladino
Affiliation: Dipartimento di Fisica e Astronomia
Affiliation Address: Via Santa Sofia 64, 95123 Catania
Country: Italy
Oral presentation/Poster (Author's request): Oral presentation
Other authors and affiliations: Antonio D'Arrigo (Dipartimento di Fisica e Astronomia), Giuseppe Falci (Dipartimento di Fisica e Astronomia)
Abstract

The design of quantum control strategies is a key requirement in the perspective of hybrid distributed architectures where quantum nodes based on artificial atoms are linked by photonic quantum channels. Fighting decoherence which arises from unwanted interactions with environmental degrees of freedom, resulting in errors both during manipulation and transmission of quantum information, is a central challenge for quantum based technologies. High-fidelity quantum information processing and fault-tolerant quantum computing in fact set strict limits on allowable errors per gate. Those issues are particularly relevant for solid state nanoscale devices. Both semiconducting and superconducting nanocircuits are hindered by the presence of material-inherent non-Markovian fluctuations often characterized by a 1/f power spectrum. In this presentation I will review our recent works on entanglement protection from non-Gaussian and 1/f noise via dynamical decoupling during both universal two-qubit gates and distribution through noisy communication channels.