丁香园AV

Synopsis

Engineered quantum systems are a powerful tool for quantum sensing and simulating otherwise intractable many-body quantum systems. Defects in the solid-state have emerged as one particularly useful class of platforms for tackling these goals, and the nitrogen-vacancy (NV) centre in diamond is an especially noteworthy example owing to its ease of addressability and functionality across a broad range of conditions. However, engineering the system dimensionality and the underlying Hamiltonian is required to achieve good sensitivity and effective simulation. In this talk, I will discuss two methods of control: dimensional engineering via chemical vapor deposition (CVD) and Hamiltonian engineering via Floquet drive. These two techniques enable the observation of myriad interesting phenomena, which we will discuss across 3, 2, and 1-D systems. As an example of sensing using a single qubit magnetometer, I will show scanning NV measurements of monolayer graphene nanostructures that provide direct evidence for hydrodynamic effects in the electronic flow.