Photoelectric Detection and Quantum Readout of Nitrogen‐Vacancy Center Spin States in Diamond,Advanced Optical Materials

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Photoelectric Detection and Quantum Readout of Nitrogen‐Vacancy Center Spin States in Diamond
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-04-20 , DOI: 10.1002/adom.201902132
Emilie Bourgeois _{1,

2} , Michal Gulka _{1,

2} , Milos Nesladek _{1,

2}

Affiliation

A novel method for reading out the electron spin state of the negatively charged nitrogen‐vacancy (NV) point defect in diamond, based on photoelectric detection of NV magnetic resonances (PDMR), is reviewed. As a convenient way to measure the spin state of qubits, the presented technique is anticipated to lead to a vast range of applications in the field of quantum technologies. It has been demonstrated that this method can be used both in continuous‐wave mode and for the pulse readout of coherently manipulated NV⁻ spins. The PDMR technique presents interesting advantages over the commonly used optical detection of magnetic resonances (ODMR) and was recently downscaled to the reading out of a single NV⁻ spin qubit. The principles, current developments, advantages, and drawbacks of PDMR are presented in this progress report. A complete to‐date methodology of NV photoelectric readout is described and PDMR is compared to ODMR. Future developments and possible improvements of the technique are mentioned. The results of the latest studies, aiming at overcoming limitations in the PDMR contrast through a better understanding of NV photo‐physics and of charge exchanges between NV centers and other electrically active defects, are discussed.

中文翻译：

金刚石中氮空位中心自旋态的光电检测和量子读出

综述了一种基于NV磁共振（PDMR）的光电检测方法来读取金刚石中带负电荷的氮空位（NV）点缺陷的电子自旋态的新方法。作为一种测量量子位自旋状态的简便方法，预计所提出的技术将导致量子技术领域的广泛应用。已经证明，该方法既可以在连续波模式和用于相干地操纵NV的脉冲读出被使用^-旋转。所述PDMR技术呈现出优于磁共振（ODMR）的常用光学检测有趣的优点和最近被缩小的所述读出的单个NV的^-自旋量子比特。此进度报告介绍了PDMR的原理，当前发展，优点和缺点。描述了完整的NV光电读出方法，并将PDMR与ODMR进行了比较。提到了该技术的未来发展和可能的改进。讨论了最新研究的结果，旨在通过更好地了解NV光物理以及NV中心与其他电活性缺陷之间的电荷交换来克服PDMR对比度的局限性。

更新日期：2020-06-19

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