Nanoscale Nuclear Magnetic Resonance with single Qubits in Diamond
ORAL · Invited
Abstract
I will present recent advances in NV center-based nanoscale sensing and spectroscopy, highlighting how single nuclear spins and engineered nanostructures can overcome long-standing limitations in sensitivity, spectral resolution, and sample control.
In the first part, I will discuss how individual nuclear spins coupled to NV centers can serve as robust quantum memories. I will show how memory-assisted protocols improve the performance of nanoscale NMR spectroscopy, enabling higher spectral resolution and expanding the range of detectable molecular dynamics.
The second part will center on our development of the nanowell platform in diamond, designed to confine liquid state samples and address diffusion limitations in NV-based nanoscale NMR spectroscopy. By integrating NV centers within these nanowells, we achieve improved NMR detection efficiencies and precise sample colocalization, which could pave the way for practical applications of nanoscale NMR in biochemistry and molecular analysis.
Finally, I will discuss the application of NV-based nanoscale NMR to probe the pairing symmetry in 2D superconductors, using niobium diselenide (NbSe2) as a model system. Conventional NMR spectroscopy was performed on bulk NbSe2 to investigate electronic behavior across the charge density wave (CDW) phase, serving as a reference. Building on this, exfoliated NbSe2 flakes were transferred onto diamond surfaces and studied optically. We examined the spin properties of NV centers beneath the flakes to assess their suitability for nanoscale NMR in such systems.
Together, these results illustrate the versatility of NV centers as quantum sensors and demonstrate their potential to address open questions in condensed matter physics, chemistry, and materials science.
In the first part, I will discuss how individual nuclear spins coupled to NV centers can serve as robust quantum memories. I will show how memory-assisted protocols improve the performance of nanoscale NMR spectroscopy, enabling higher spectral resolution and expanding the range of detectable molecular dynamics.
The second part will center on our development of the nanowell platform in diamond, designed to confine liquid state samples and address diffusion limitations in NV-based nanoscale NMR spectroscopy. By integrating NV centers within these nanowells, we achieve improved NMR detection efficiencies and precise sample colocalization, which could pave the way for practical applications of nanoscale NMR in biochemistry and molecular analysis.
Finally, I will discuss the application of NV-based nanoscale NMR to probe the pairing symmetry in 2D superconductors, using niobium diselenide (NbSe2) as a model system. Conventional NMR spectroscopy was performed on bulk NbSe2 to investigate electronic behavior across the charge density wave (CDW) phase, serving as a reference. Building on this, exfoliated NbSe2 flakes were transferred onto diamond surfaces and studied optically. We examined the spin properties of NV centers beneath the flakes to assess their suitability for nanoscale NMR in such systems.
Together, these results illustrate the versatility of NV centers as quantum sensors and demonstrate their potential to address open questions in condensed matter physics, chemistry, and materials science.
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Presenters
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Nabeel Aslam
- Leipzig University