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Title: Recursive polarization of nuclear spins in diamond at arbitrary magnetic fields

We introduce an alternate route to dynamically polarize the nuclear spin host of nitrogen-vacancy (NV) centers in diamond. Our approach articulates optical, microwave, and radio-frequency pulses to recursively transfer spin polarization from the NV electronic spin. Using two complementary variants of the same underlying principle, we demonstrate nitrogen nuclear spin initialization approaching 80% at room temperature both in ensemble and single NV centers. Unlike existing schemes, our approach does not rely on level anti-crossings and is thus applicable at arbitrary magnetic fields. This versatility should prove useful in applications ranging from nanoscale metrology to sensitivity-enhanced NMR.
Authors:
; ; ;  [1]
  1. Department of Physics, CUNY-City College of New York, New York, New York 10031 (United States)
Publication Date:
OSTI Identifier:
22395534
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIAMONDS; MAGNETIC FIELDS; MICROWAVE RADIATION; NANOSTRUCTURES; NITROGEN; NUCLEAR MAGNETIC RESONANCE; POLARIZATION; RADIOWAVE RADIATION; SENSITIVITY; SPIN; SPIN ORIENTATION; TEMPERATURE RANGE 0273-0400 K; VACANCIES