1. Band-selective shaped pulse for high fidelity quantum control in diamond.
- Author
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Yan-Chun Chang, Jian Xing, Fei-Hao Zhang, Gang-Qin Liu, Qian-Qing Jiang, Wu-Xia Li, Chang-Zhi Gu, Gui-Lu Long, and Xin-Yu Pan
- Subjects
- *
DIAMONDS , *QUANTUM computing , *QUANTUM information science , *OPTICAL pulse shaping , *ELECTRON spin , *ELECTRONIC excitation - Abstract
High fidelity quantum control of qubits is crucially important for realistic quantum computing, and it becomes more challenging when there are inevitable interactions between qubits. We introduce a band-selective shaped pulse, refocusing BURP (REBURP) pulse, to cope with the problems. The electron spin of nitrogen-vacancy centers in diamond is flipped with high fidelity by the REBURP pulse. In contrast with traditional rectangular pulses, the shaped pulse has almost equal excitation effect in a sharply edged region (in frequency domain). So the three sublevels of host 14N nuclear spin can be flipped accurately simultaneously, while unwanted excitations of other sublevels (e.g., of a nearby 13C nuclear spin) is well suppressed. Our scheme can be used for various applications such as quantum metrology, quantum sensing, and quantum information process. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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