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Abstract

Tremendous research activity worldwide has focused on attempting to harness the exotic properties of quantum physics for new applications in sensing, computation, and communications - a push to develop “engineered quantum systems”. Colour centers in diamond such as, nitrogen-vacancy centers (NV centers) could provide a platform for precision magnetometry allowing for nanoscale magnetic resonance imaging (MRI). In this talk, I will describe our efforts towards the development of India’s first Quantum technology lab based on colour defects in diamond. I will give a detailed overview of our research towards the development of an imaging tool, aka, the quantum diamond microscope, for mapping neuronal signals from mammalian brain cells. While the diamond quantum microscope is routinely used for measuring static magnetic fields in a wide field of view with diffraction limited spatial resolution, dynamic widefield magnetometry for the measurement of temporally varying magnetic fields has been very challenging. In this talk, I will describe the first demonstration of dynamic widefield magnetometry using Nitrogen vacancy centers in diamond and its applications.

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About the Speaker

Kasturi Saha is an assistant professor in IIT Bombay in the Electrical Engineering Department. She was a postdoctoral fellow in Prof. Paola Cappellaro’s group in the Research Laboratory of Electronics at Massachusetts Institute of Technology. She obtained her Ph.D. in Prof.Alexander Gaeta’s group in the School of Applied and Engineering Physics in Cornell University. Prior to that she did her M.Sc. from IIT-Delhi and B.Sc.(Hons.) from St. Stephen’s College, Delhi. Her research interests include nano-photonics, precision metrology, and quantum sensing and computation with solid state color defects. She is a recipient of the DST-INSPIRE faculty fellowship.