Dresden 2014 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 19: Poster I

MA 19.23: Poster

Dienstag, 1. April 2014, 13:00–15:30, P1

Sensing magnetic fields with a nuclear spin based diamond magnetometer — •Alexander Stark¹, Boris Naydenov¹, Alex Retzker², and Fedor Jelezko¹ — ¹Institut für Quantenoptik, Universität Ulm, D-89073 Ulm, Germany — ²Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Single defect centres in diamond and especially the nitrogen-vacancy (NV) show remarkable physical properties, making them ideal candidates for single photon sources, qubits and nano-scale magnetic field sensors[1]. Here we present a novel scheme for detecting magnetic fields using single nuclear spins coupled to a single NV in a bulk diamond crystal. Our method relies on a quantum non-demolition read-out[2,3] of a neighbouring ¹³C nuclear spin which is used as the actual sensor. Additionally we apply an error correction protocol in order to improve the sensitivity. The results are compared with the experimental realizations. We believe that our method can find application in the emerging field of diamond magnetometry.

[1] M. Doherty et al., Physics Reports 528, 1 (2013)

[2] P. Neumann et al., Science 329, 542 (2010)

[3] P. C. Maurer et al., Science 336, 1283 (2012)