Optically detected magnetic resonance in neutral silicon vacancy centers in diamond via bound exciton states
ORAL
Abstract
Neutral silicon vacancy (SiV0) centers in diamond are promising candidates for quantum networks because of their excellent optical properties and long spin coherence times. However, spin-dependent fluorescence in such defects has been elusive due to poor understanding of the excited state fine structure and limited off-resonant spin polarization. In this talk, I will discuss the realization of optically detected magnetic resonance and coherent control of SiV0 centers at cryogenic temperatures, enabled by efficient optical spin polarization via previously un-reported higher-lying excited states. We assign these states as bound exciton states using group theory and density functional theory. These bound exciton states enable new control schemes for SiV0 as well as other emerging defect systems.
*This work was supported by the NSF under the EFRI ACQUIRE program and Princeton Center for Complex Materials, AFOSR, and DARPA. G. T. was supported by the Janos Bolyai Research Scholarship and the UNKP-20-5 New National Excellence Program. D. H. was supported by A*STAR, Singapore. A. G. was supported by National Office of Research, Development and Innovation in Hungary for Quantum Technology Program and National Excellence Program, from the EU Commission and the EU QuantERA program.
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Presenters
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Zihuai Zhang
- Princeton University