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We present a density functional theory analysis of the negatively charged nitrogen-vacancy (NV$^-$) defect complex in diamond located in the vicinity of (111)- or (100)-oriented surfaces with mixed (N,H)-terminations. We assess the…

Materials Science · Physics 2022-02-21 Wolfgang Körner , Reyhaneh Ghassemizadeh , Daniel F. Urban , Christian Elsässer

As a potential candidate for quantum computation and metrology, the nitrogen vacancy (NV)center in diamond presented both challenges and opportunities resulted from charge state conversion. By utilizing different lasers for the…

Quantum Physics · Physics 2014-10-20 Xiangdong Chen , Changling Zou , Zhaojun Gong , Chunhua Dong , Guangcan Guo , Fangwen Sun

Point defects in semiconductors are becoming central to quantum technologies. They can be used as spin qubits interfacing with photons, which are fundamental for building quantum networks. Currently, the most prominent quantum defect in…

Materials Science · Physics 2025-04-17 Yihuang Xiong , Yizhi Zhu , Shay McBride , Sinéad M. Griffin , Geoffroy Hautier

Scalable realizations of quantum network technologies utilizing the nitrogen vacancy center in diamond require creation of optically coherent NV centers in close proximity to a surface for coupling to optical structures. We create single NV…

Mesoscale and Nanoscale Physics · Physics 2021-09-01 Srivatsa Chakravarthi , Christian Pederson , Zeeshawn Kazi , Andrew Ivanov , Kai-Mei C. Fu

The negatively-charged silicon-vacancy (SiV$^-$) color center in diamond has recently emerged as a promising system for quantum photonics. Its symmetry-protected optical transitions enable creation of indistinguishable emitter arrays and…

Vacancy centers in diamond have proven to be a viable solid-state platform for quantum coherent opto-electronic applications. Among the variety of vacancy centers, silicon-vacancy (SiV) centers have recently attracted much attention as an…

Materials Science · Physics 2020-05-20 Albert Liu , Steven T. Cundiff

Nitrogen vacancy (NV-) color centers in diamond are a prime candidate for use in quantum information devices, owing to their spin-1 ground state, straightforward optical initialization and readout, and long intrinsic coherence times in a…

Quantum Physics · Physics 2015-06-19 Anna J. Parker , Hai-Jing Wang , Yiran Li , Alexander Pines , Jonathan P. King

Shallow, negatively-charged Nitrogen-Vacancy centers (NV-) in diamond have been proposed for high-sensitivity magnetometry and spin-polarization transfer applications. However, surface effects tend to favor and stabilize the less useful…

Mesoscale and Nanoscale Physics · Physics 2021-05-12 Federico Gorrini , Carla Dorigoni , Domingo Olivares-Postigo , Rakshyakar Giri , Pietro Aprà , Federico Picollo , Angelo Bifone

Negatively charged nitrogen-vacancy (NV) center in diamond is the representative solid state defect qubit for quantum information science, offering long coherence time at room temperature. To achieve high sensitivity and spatial resolution,…

Materials Science · Physics 2025-08-12 Pei Li , Guanjian Hu , Xiao Yu , Bing Huang , Song Li

We report the first experimental observation of a doubly-charged defect in diamond, SiV2-, in silicon and nitrogen co-doped samples. We measure spectroscopic signatures we attribute to substitutional silicon in diamond, and identify a…

Silicon-vacancy and tin-vacancy defects in diamond are of interest as alternative qubits to the NV center due to their superior optical properties. While the availability of optical transitions in these defects is one of their assets,…

Quantum Physics · Physics 2021-09-08 Evangelia Takou , Sophia E. Economou

The negatively charged tin-vacancy (SnV-) center in diamond is a promising solid-state qubit for applications in quantum networking due to its high quantum efficiency, strong zero phonon emission, and reduced sensitivity to electrical…

The controlled creation of quantum emitters in diamond represents a major research effort in the fabrication of single-photon devices. Here, we present the scalable production of silicon-vacancy (SiV) color centers in single-crystal diamond…

Photon-mediated coupling between distant matter qubits may enable secure communication over long distances, the implementation of distributed quantum computing schemes, and the exploration of new regimes of many-body quantum dynamics.…

We present a beam-directed chemical technique for controlling the charge states of near-surface luminescence centers in semiconductors. Specifically, we fluorinate the surface of H-terminated diamond by electron beam irradiation in the…

Materials Science · Physics 2015-06-19 Toby W. Shanley , Aiden A. Martin , Igor Aharonovich , Milos Toth

Spin degrees of freedom of charged nitrogen-vacancy (NV$^-$) centers in diamond have large decoherence times even at room temperature, can be initialized and read out using optical fields, and are therefore a promising candidate for solid…

Other Condensed Matter · Physics 2009-11-13 A. M. Zagoskin , J. R. Johansson , S. Ashhab , Franco Nori

The negatively charged nitrogen-vacancy center in diamond is a prototype photoluminescent point defect spin qubit with promising quantum technology applications, enabled by its efficient optical spin polarization and readout. Its low-lying…

Negatively charged silicon vacancy (SiV) center in diamonds are leading candidates for solid-state quantum memories that can be controlled using electromagnetic or acoustic waves. The latter are particularly promising due to strong strain…

The silicon vacancy center in diamond is a promising system for quantum technologies due to its exceptional optical and spin properties. This has led to great interest in the silicon-vacancy center as well as in the other group IV vacancy…

Materials Science · Physics 2025-04-29 Joshua Claes , Bart Partoens , Dirk Lamoen

Group-IV color centers in diamond have garnered great interest for their potential as optically active solid-state spin qubits. Future utilization of such emitters requires the development of precise site-controlled emitter generation…

Mesoscale and Nanoscale Physics · Physics 2020-02-21 Alison E. Rugar , Haiyu Lu , Constantin Dory , Shuo Sun , Patrick J. McQuade , Zhi-Xun Shen , Nicholas A. Melosh , Jelena Vučković