Donghun Lee: Qubits, New Experimental Tools for Science: Challenges and Opportunities

Qubits, New Experimental Tools for Science: Challenges and Opportunities

Abstract: Many scientific advances and breakthroughs have coincided with the invention and development of novel and precise experimental tools. Qubits are not only essential components of quantum information science and technologies, but also they can also serve as unique experimental tools in research. In this talk, we will present examples of the new opportunities based on qubits: especially nitrogen-vacancy (NV) centers in diamond. We will focus on quantum sensing and imaging applications at two different length scales, i.e. nanometers and micrometers. First, the NV center is combined with a scanning probe microscope to map out stray fields from magnetic materials and current flows in transport devices at nanometer scale. Second, an ensemble of NV centers is combined with a wide field-of-view optical microscope to image magnetic structures at micrometer scale. We will also discuss potential applications of the qubit systems in industry, such as portable magnetometers and hands-on quantum systems for education.