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Q: Fachverband Quantenoptik und Photonik
Q 55: Nano-Optics (Single Quantum Emitters) III
Q 55.6: Vortrag
Donnerstag, 14. März 2019, 15:30–15:45, S SR 112 Maschb.
Robust optical polarization of nuclear spin baths using Hamiltonian engineering of nitrogen-vacancy center quantum dynamics — •Benedikt Tratzmiller1, Ilai Schwartz1,2, Jochen Scheuer3, Samuel Müller3, Qiong Chen1, Ish Dhand1, Zhen-Yu Wang1, Christoph Müller2, Boris Naydenov3, Fedor Jelezko3, and Martin Plenio1 — 1Institut für Theoretische Physik und IQST, Albert-Einstein-Allee 11, Universität Ulm, 89081 Ulm, Germany. — 2NVision Imaging Technologies GmbH, Albert-Einstein-Allee 11, 89081 Ulm, Germany. — 3Institut für Quantenoptik und IQST, Universität Ulm, 89081 Ulm, Germany.
Dynamic nuclear polarization (DNP) is an important technique that uses polarization transfer from electron to nuclear spins to achieve nuclear hyperpolarization, which drastically improves the signal-to-noise ratio in various NMR applications. We present a new protocol for DNP introduced in [1], which uses short microwave pulses to achieve fast and robust polarization transfer. We theoretically derive sequences and experimentally demonstrate that they are capable of efficient polarization transfer from optically polarized NV centers in diamond to the surrounding 13C nuclear spin bath even in the presence of control errors.
[1] Schwartz, Ilai, et al. "Robust optical polarization of nuclear spin baths using Hamiltonian engineering of nitrogen-vacancy center quantum dynamics." Science advances 4.8 (2018): eaat8978.