Research

Quantum sensors based on nitrogen vacancy (NV) centers in diamond enable ultrahigh sensitivity measurements of magnetic fields with nanometer scale resolution. As optically addressable solid state qubits, they offer a large playground of new sensing functionalities that can open new scientific and technological frontiers. We are interested in developing new sensing techniques and platforms for nanoscale NMR, as well as using NV centers to study condensed matter physics and novel materials.

Superconducting qubits are a highly successful quantum platform that has been integrated into some of the largest processors to date. However, their performance is still limited by single qubit coherence, which is dominated by lossy and noisy materials. We are exploring new material systems and architectures for superconducting processors, while working to understand the microscopic origins of noise and loss.

The core technology to enable long distance quantum networks still remains to be developed. We are working to discover new solid state atomic quantum memories, and in parallel developing the quantum photonic technology to enable quantum repeaters for long distance quantum communication.

Quantum technologies represent a new frontier for device physics, nanofabrication, and materials science, with extremely demanding specifications for purity and quality. There are also fundamentally new opportunities for device and materials engineering in this strange parameter space. We are working on new techniques in single crystal diamond fabrication and etching, methods for co-doping ultrahigh purity materials, fabricating heterostructures and functionalized surfaces, and new methods of materials and surface spectroscopy to interrogate these systems. We are also building a new quantum diamond growth facility in collaboration with the Princeton Plasma Physics Laboratory, which will explore new growth methods, doping, and plasma science for pushing the state of the art in quantum diamond technologies.