Quantum information processing and metrology with color centers in diamonds |
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Authors: | Jing-Wei Zhou Peng-Fei Wang Fa-Zhan Shi Pu Huang Xi Kong Xiang-Kun Xu Qi Zhang Zi-Xiang Wang Xing Rong Jiang-Feng Du |
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Affiliation: | Hefei National Laboratory for Physics Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China |
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Abstract: | The Nitrogen–Vacancy (NV) center is becoming a promising qubit for quantum information processing. The defect has a long coherence time at room temperature and it allows spin state initialized and read out by laser and manipulated by microwave pulses. It has been utilized as a ultra sensitive probe for magnetic fields and remote spins as well. Here, we review the recent progresses in experimental demonstrations based on NV centers. We first introduce our work on implementation of the Deutsch–Jozsa algorithm with a single electronic spin in diamond. Then the quantum nature of the bath around the center spin is revealed and continuous wave dynamical decoupling has been demonstrated. By applying dynamical decoupling, a multi-pass quantum metrology protocol is realized to enhance phase estimation. In the final, we demonstrated NV center can be regarded as a ultra-sensitive sensor spin to implement nuclear magnetic resonance (NMR) imaging at nanoscale. |
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Keywords: | quantum information processing and metrology Nitrogen Vacancy center phase estimation dynamical deeoupling single spin detection |
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