Research Interests:

We are an interdisciplinary research group with a focus on developing new tools and applying them to important problems in both the physical and life sciences- from fundamental physics, astrophysics and nanoscience to bioimaging, physiology and medical diagnostics. Current areas of research include:

* Development of functionalized nanoparticles for molecular imaging.
* MRI of hyperpolarized media for biomedical imaging, with a focus on pulmonary physiology and brain function.
* High-resolution magnetometry with NV-diamond, with applications in both the physical and life sciences.
* Precision tests of fundamental physical laws and symmetries.
* Development of improved optical wavelength calibrators for astrophysics, with applications to exoplanet searches and observational cosmology.
* Investigations of EIT and slow & stored light, with applications to quantum information, photonics and precision measurements and,
* NMR studies of porous and granular media.

Selected Publications:

L.L. Tsai, R.W. Mair, M.S. Rosen, S. Patz and R.L. Walsworth (2008). An Open-Access, Very-Low-Field MRI System for Posture-Dependent 3He Human Lung Imaging. Journal of Magnetic Resonance 193: 274.

J.R. Maze, P.L. Stanwix, J.S. Hodges, S. Hong, J.M. Taylor, P. Cappellaro, L. Jiang, A.S. Zibrov, A. Yacoby, R. Walsworth and M.D. Lukin (2008). Nanoscale magnetic sensing with an individual electronic spin in diamond. Nature 455(7213): 644-7.

L.L. Tsai, R.W. Mair, C.H. Li, M.S. Rosen, S. Patz and R.L. Walsworth (2008). Posture-Dependent Human 3He Lung Imaging in an Open Access MRI System: Initial Results. Academic Radiology 15: 728.

R.W. Mair, L.L. Tsai, C.-H. Li, M.J. Barlow, R. Scheidegger, M.S. Rosen, S. Patz and R L. Walsworth (2008). Towards Posture-Dependent Human Pulmonary Oxygen Mapping using Hyperpolarized Helium and an Open-Access MRI System. Magnetic Resonance Microscopy (in press).

J.M. Taylor, P. Cappellaro, L. Childress, L. Jiang, D. Budker, P.R. Hemmer, A. Yacoby, R. Walsworth and M.D. Lukin (2008). High-sensitivity diamond magnetometer with nanoscale resolution. Nature Physics (in press).

I.C. Ruset, L.L. Tsai, R.W. Mair, S. Patz, M.I. Hrovat, M.S. Rosen, I. Muradian, J. Ng, G.P. Topulos, J.P. Butler, R.L. Walsworth, and F.W. Hersman (2006). A System for Open-Access 3He Lung Imaging at Very Low Field. Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering 29B: 210.