Description: Controlled quantum register of 13C nuclear spins around an NV electron spin, used to detect external nuclear spins with nanoscale spatial resolution — enabling nano-NMR and nano-MRI.
Ajoy's group uses NV and P1 centers in diamond to hyperpolarize nuclear spins via optically pumped dynamic nuclear polarization, dramatically boosting NMR/MRI signal for chemical sensing and nanoscale spectroscopy. This builds directly on the broader lineage of NV-ensemble quantum sensing experiments (DEER, nanoscale NMR, T1 relaxometry) that have reached pT/sqrt(Hz)-class sensitivities, extending it toward practical hyperpolarized-sensing applications; the lab is actively recruiting postdocs.
PREFERRED. Cappellaro pioneered quantum magnetic sensing with electronic spin defects (NV centers) in diamond, and her group designs and controls solid-state spin qubit systems for quantum sensing, simulation, and quantum information processing, combining theoretical insight into spin dynamics with experimental control of dynamical decoupling and nuclear-spin registers for nanoscale NMR. This builds on the broader lineage of NV ensemble quantum sensing (DEER, NMR, T1 relaxometry) that has pushed AC/DC magnetic sensitivities toward the pT/sqrt(Hz) regime, which her group's Hamiltonian-engineering and nuclear-spin-register approaches aim to extend further.
PREFERRED. Englund's Quantum Photonics Laboratory builds solid-state quantum technologies spanning diamond NV-center ensembles, integrated photonic circuits, and single-photon detectors, including a CMOS-integrated NV-ensemble quantum sensor for vector magnetometry and 4-pi steradian field sensing, and cavity-QED schemes for nuclear-spin readout aimed at nanoscale/inertial sensing. This continues the trajectory of NV ensemble quantum sensing (DEER, chip-scale NMR, T1 relaxometry) toward pT/sqrt(Hz)-class, chip-integrated magnetometers, alongside quantum networking and photonic quantum computing work.
Tim Taminiau (QuTech team leader, Assoc Prof) develops NV-center quantum registers for sensing and quantum networks. Research: (1) NV-center nuclear spin registers — quantum control of up to 50 coupled 13C nuclear spins; (2) nanoscale NMR sensing — mapping external spin networks with sub-nm resolution; (3) silicon-carbide spin qubits — VSi centres for scalable quantum networks with fast entanglement rates; (4) quantum error correction in multi-spin diamond registers. NWO Vici Grant 2026. Quadrupolar nuclear spin spectroscopy of individual nuclei (Nano Letters 2024). Key for sensing proteins at nanoscale.
Wrachtrup is a founder of NV-centre quantum sensing: single-spin and ensemble magnetometry, nanoscale/single-molecule NMR and ESR, nuclear-spin registers, scanning-probe quantum-materials imaging, and programmable diamond nanosensors for chemistry and biology. His group actively recruits postdocs across NV sensing and quantum technology. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is the reference point, extending DEER/nano-NMR toward single-molecule and cryogenic regimes.