NV center based magnetometry

Interest in nitrogen-vacancy (NV) centers in diamond has renewed recently due to a fuller understanding of their unique quantum properties. The electronic state of an NV center forms a spin-1 system, on which general quantum control and information processing procedures can be performed. Due to their weak coupling with its environment, NV spin-states have exceptionally long coherence times; hence, there is great potential to make use of a system which contains the coherence properties of atoms, yet is trapt within the rigid lattice of a diamond crystal. Moreover, NV centers can be addressed optically, and due to their spin-dependent fluorescence, the electronic spin of an NV center can be both readout and initialized with a simple optical setup. Full quantum coherent control is achievable through the application of radio-frequency pulses on the optically initialized state. In our group, our aim to apply these unique properties towards the development of novel instrumentation.

In particular, we have developed an extremely sensitive magnetometer which has the capability to measure the dipole fields of single electron spins at room temperature. This NV magnetometer is implemented in a unique scanning probe microscope which allows for the the spatial examination of minute magnetic fields in a wide variety of systems.

NV magnetometry publications

C. Du, T. Van der Sar, T. X. Zhou, P. Upadhyaya, F. Casola, H. Zhang, M. C. Onbasli, C. A. Ross, R. L. Walsworth, Y. Tserkovnyak, Amir Yacoby. "Control and Local Measurement of the Spin Chemical Potential in a Magnetic Insulator." arxiv: 1611.07408 (Submitted Nov. 22, 2016)

Y. Dovzhenko, F. Casola, S. Schlotter, T.X. Zhou, F. Buttner, R. L. Walsworth, G.S.D. Beach, A Yacoby."Imaging the Spin Texture of a Skyrmion Under Ambient Conditions Using an Atomic-Sized Sensor." arxiv: 1611.00673 (Submitted Nov. 2 2016).

T. van der Sar, F. Casola, R. Walsworth, and A. Yacoby. " Nanometre-scale probing of spin waves using single electron spins." Nature Communications 6, 7886 (August 7 2015).

L. Luan, M.S. Grinolds, S. Hong, P. Maletinsky, R. L. Walsworth & A. Yacoby. "Decoherence imaging of spin ensembles using a scanning single-electron spin in diamond". Sci. Rep. 5, 8119 (2015).

M. S. Grinolds, M. Warner, K. De Greve, Y. Dovzhenko, L. Thiel, R. L. Walsworth, S. Hong, P. Maletinsky, A. Yacoby. "Subnanometre resolution in three-dimensional magnetic resonance imaging of individual dark spins." Nature Nanotechnology 7, AOP (2014).

M. S. Grinolds*, S. Hong*, P. Maletinsky*, L. Luan, M. D. Lukin, R. L. Walsworth, A. Yacoby "Nanoscale magnetic imaging of a single electron spin under ambient conditions" Nature Phys. 9, 215-219 (2013).

S. Hong*, M. S. Grinolds*, P. Maletinsky*, R. L. Walsworth, M. D. Lukin, A. Yacoby "Coherent, mechanical control of a single electronic spin" Nano Letters 12, 3920-3924 (2012).

P. Maletinsky*, S. Hong*, M. S. Grinolds*, B. Hausmann, M. D. Lukin, R. L. Walsworth, M. Loncar, A. Yacoby "A robust scanning diamond sensor for nanoscale imaging with single nitrogen-vacancy centres" Nature Nanotechnology 7, 320-324 (2012).

M. S. Grinolds*, P. Maletinsky*, S. Hong*, M. D. Lukin, R. L. Walsworth, A. Yacoby "Quantum control of proximal spins using nanoscale magnetic resonance imaging", Nature Physics 7, 687-692 (2011).

J. R. Maze, P. L. Stanwix, J. S. Hodges, S. Hong, J. M. Taylor, P. Cappellaro, L. Jiang, M. V. Gurudev Dutt, E. Togan, A. S. Zibrov, A. Yacoby, R. L. Walsworth, M. D. Lukin, "Nanoscale magnetic sensing with an individual electronic spin in diamond", Nature 455, 644-647 (2008).