Spin-based quantum sensing utilizes the quantum properties of spin systems to measure physical quantities such as magnetic fields and temperature with exceptional sensitivity and spatial resolution. However, the advantages of dense solid-state systems, such as enhanced sensitivity of ensemble NV centers in diamond, are often compromised by decoherence arising from dipolar interactions among NV centers and with surrounding bath spins.  Our group's research goals are to

• Decouple the interactions in ensemble NV centers by developing and implementing novel pulse sequences to extend the coherence time.

• Extend the coherence time using nuclear spin memory or entanglement-based protocols.

• Design and fabricate nano-photonic structures such as diamond nanopillars and membranes to enhance photon collection efficiency and reduce power consumption.

• Nuclear magnetic resonance(NMR) and magnetic resonance imaging(MRI) using diamond nitrogen-vacancy(DNV)

• Applications of quantum diamond microscope(QDM)

• Miniaturization of diamond NV magnetometers