Nanoscale torsional resonator for polarization and spectroscopy of nuclear spins |
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Authors: | Butler Mark C Norton Valerie A Weitekamp Daniel P |
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Institution: | California Institute of Technology, Pasadena, 91125, USA. mcbutler@berkeley.edu |
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Abstract: | We propose a torsional resonator that couples to the transverse spin dipole of an attached sample. The absence of relative motion eliminates a source of friction that would otherwise hinder nanoscale implementation. Enhanced spontaneous emission induced by the resonator relaxes the longitudinal spin dipole at a rate of ~1 s?1 in the low-temperature limit. With signal averaging, single-proton magnetic resonance spectroscopy appears feasible at ~10 mK and a high magnetic field, while single-shot sensitivity is practical for samples with at least tens of protons in a volume of ~5 nm3. |
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