Research Areas - (5) Nuclear Spin Register Diamond Quantum Sensing

Full path: Physics > Quantum Sensing > Hamiltonian Engineering of Spin Ensembles > Nuclear Spin Register Diamond Quantum Sensing

Department(s)/lab(s): Physics | Quantum Engineering Group (Cappellaro Lab) @ MIT
Summary:

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.

Department(s)/lab(s): Physics | Lukin Group @ Harvard
Summary:

Lukin's group is a leading center for quantum science built on NV- and SiV-center diamond spin qubits, neutral-atom (Rydberg) tweezer arrays, and hybrid quantum networks, spanning quantum sensing, quantum information processing, and many-body physics. This work builds directly on the lineage of NV ensemble quantum sensing experiments (DEER, nanoscale NMR, T1 relaxometry) that first reached pT/√Hz-class magnetic sensitivities, which Lukin's own group helped pioneer and continues to extend toward nuclear-spin-register-based nanoscale NMR and distributed sensor networks.

Department(s)/lab(s): School of Electrical Engineering and Telecommunications | Fundamental Quantum Technologies Laboratory (Morello) @ UNSW
Summary:

Morello heads the Fundamental Quantum Technologies Laboratory and is the person who first read out the spin of a single electron, and then a single nucleus, in silicon. Current directions: high-spin donors (antimony-123, with eight nuclear levels) used as qudits and as sensors of local strain and electric field; nuclear acoustic resonance, in which a strain wave rather than a magnetic field drives the nuclear spin; engineered decoherence experiments as tests of quantum foundations; and precision tomography of multi-qubit donor registers. The group's donors are among the longest-coherence solid-state spins known (seconds for nuclei). Positioned against the established body of NV-ensemble quantum sensing work — DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity — a single-donor nuclear spin in silicon is functionally an NV centre with better coherence and worse readout: the same DEER, dynamical-decoupling and nuclear-register protocols apply, and the group's high-spin qudit work is aimed at exactly the multi-level sensing enhancements that the NV community is now chasing. Preferred attribute present: sensitivity and coherence, not fabrication, are the limiting variables here.

Department(s)/lab(s): Physics | 3rd Institute of Physics (Wrachtrup Group) @ Stuttgart
Summary:

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.

Department(s)/lab(s): Physics | Yao Group @ Harvard
Summary:

Yao works at the interface of theoretical and experimental many-body physics and quantum sensing, using dense NV-diamond spin ensembles and Hamiltonian engineering to push magnetometry and nanoscale NMR beyond standard-quantum-limit sensitivities. His work is a direct extension of the original NV ensemble quantum sensing experiments (DEER, nanoscale NMR, T1 relaxometry) that achieved pT/√Hz sensitivity, adding many-body-enhanced protocols and error-correction-assisted sensing on top of that foundation.