Discovery of ST1 centers in natural diamond

Nanophotonics

article

Priyadharshini Balasubramanian¹  Mathias H. Metsch¹  Prithvi Reddy³  Lachlan J. Rogers⁴  Neil B. Manson³  Marcus W. Doherty³  Fedor Jelezko¹ 

[1] Institute for Quantum Optics, University Ulm;Center for Integrated Quantum Science and Technology (IQST), University Ulm;Laser Physics Centre, Research School of Physics and Engineering, Australian National University;Department of Physics and Astronomy and ARC Centre of Excellence for Engineered Quantum Systems (EQUS), Macquarie University

关键词: ST1;    diamond;    color center;    spectroscopy;    electronic structure;   

DOI  :  10.1515/nanoph-2019-0148

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The ST1 center is a point defect in diamond with bright fluorescence and a mechanism for optical spin initialization and readout. The center has impressive potential for applications in diamond quantum computing as a quantum bus to a register of nuclear spins. This is because it has an exceptionally high readout contrast, and unlike the well-known nitrogen-vacancy center, it does not have a ground state electronic spin that decoheres the nuclear spins. However, its chemical structure is unknown, and there are large gaps in our understanding of its properties. We present the discovery of ST1 centers in natural diamond. Our experiments identify interesting power dependence of the center’s optical dynamics and reveal new electronic structure. We also present a theory of its electron-phonon interactions, which we combine with previous experiments, to shortlist likely candidates for its chemical structure.

【 授权许可】

CC BY