Nmr characterization and control of noisy quantum systems

Abstract

A register storing quantum information invariably interacts with its surrounding environment and consequently gets exposed to environmental noises Ensuring fault tolerance against environmental noise is vital in unlocking the real potential of devices based on quantum registers The error free operation of these devices demands the knowledge of the environmental noise and its mitigation below a certain threshold To this end we focus on the following two questions How to efficiently characterize environmental noise acting on a quantum register How to design optimized control strategies for suppressing environmental noise We utilize nuclear magnetic resonance NMR systems and methodologies to investigate the above questions Specifically we study noise spectroscopy controlled information scrambling quantum non Markovianity and boosting noise free long lived spin order via optimal control newline newline