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Q: Fachverband Quantenoptik und Photonik
Q 13: Posters: Quantum Optics and Photonics I
Q 13.46: Poster
Montag, 9. März 2020, 16:30–18:30, Empore Lichthof
Analysis of polarisation transfer in diamond from NV centers to 13C assisted by P1 centers — •Marit Steiner, Benedikt Tratzmiller, and Martin Plenio — Institut für Theoretische Physik, Albert-Einstein-Allee 11, Universität Ulm, 89081 Ulm, Germany
A known approach to achieve nuclear hyperpolarisation, which has potential to improve the signal to noise ratio in many NMR applications significantly, is to use dynamic nuclear polarisation (DNP), the transfer of polarisation from electron spins to nuclear spins. NV centres in diamond are well known candidates for DNP on 13C nuclear spins due to established initialisation and manipulation procedures, but the dipole dipole interaction between electron and nuclear spins is of low distance range. To provide more polarisation sources we propose to transfer polarisation from a polarised electron spin to nuclear spins assisted by other paramagnetic defects in diamond, like P1 centres that occur naturally in diamond. Furthermore, we analyse possible negative effects due to high P1 concentrations, since interaction between P1 centres could disturb the polarisation transfer from NV centre to 13C, and modify the used DNP protocol to cancel out harmful effects. We use simulations to analyse the polarisation transfer from optically polarised NV centres to 13C nuclei via P1 centres for few spins and derive a semi classical model to simulate the polarisation transfer and diffusion in a diamond.