Nonvolatile nuclear spin memory enables sensor-unlimited nanoscale spectroscopy of small spin clusters

Matthias Pfender (), Nabeel Aslam, Hitoshi Sumiya, Shinobu Onoda, Philipp Neumann (), Junichi Isoya, Carlos A. Meriles and Jörg Wrachtrup
Additional contact information
Matthias Pfender: University of Stuttgart
Nabeel Aslam: University of Stuttgart
Hitoshi Sumiya: Sumitomo Electric Industries Ltd.
Shinobu Onoda: Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology
Philipp Neumann: University of Stuttgart
Junichi Isoya: University of Tsukuba
Carlos A. Meriles: CUNY—City College of New York
Jörg Wrachtrup: University of Stuttgart

Nature Communications, 2017, vol. 8, issue 1, 1-12

Abstract: Abstract In nanoscale metrology, dissipation of the sensor limits its performance. Strong dissipation has a negative impact on sensitivity, and sensor–target interaction even causes relaxation or dephasing of the latter. The weak dissipation of nitrogen-vacancy (NV) sensors in room temperature diamond enables detection of individual target nuclear spins, yet limits the spectral resolution of nuclear magnetic resonance (NMR) spectroscopy to several hundred Hertz, which typically prevents molecular recognition. Here, we use the NV intrinsic nuclear spin as a nonvolatile classical memory to store NMR information, while suppressing sensor back-action on the target using controlled decoupling of sensor, memory, and target. We demonstrate memory lifetimes up to 4 min and apply measurement and decoupling protocols, which exploit such memories efficiently. Our universal NV-based sensor device records single-spin NMR spectra with 13 Hz resolution at room temperature.

Date: 2017
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DOI: 10.1038/s41467-017-00964-z

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