Polarizing the electronic and nuclear spin of the NV-center in diamond in arbitrary magnetic fields: analysis of the optical pumping process
Polarizing the electronic and nuclear spin of the NV-center in diamond in arbitrary magnetic fields: analysis of the optical pumping process
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DOI：
10.1088/1367-2630/aa7727
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发表时间：
2016-11
影响因子：
3.3
通讯作者：
T. Chakraborty;Jingfu Zhang;D. Suter
中科院分区：
文献类型：
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作者：
T. Chakraborty;Jingfu Zhang;D. Suter
将一组量子比特初始化为给定的量子态是量子信息协议物理实现的基本先决条件。本文讨论了金刚石中单个氮空位中心的电子自旋和核自旋的极化。我们的初始化方案使用了一系列的激光，微波和射频脉冲，我们优化了激光脉冲的泵浦参数。速率方程模型的制定，解释了自旋系统的激光脉冲的效果。通过测量Rabi振荡和Ramsey型自由感应衰变，我们实验确定了相关自旋态的布居随激光脉冲持续时间的变化。对实验数据进行了分析，确定了速率方程模型的抽运速率。
Initializing a set of qubits to a given quantum state is a basic prerequisite for the physical implementation of quantum-information protocols. Here, we discuss the polarization of the electronic and nuclear spin in a single nitrogen vacancy center in diamond. Our initialization scheme uses a sequence of laser, microwave and radio-frequency pulses, and we optimize the pumping parameters of the laser pulse. A rate equation model is formulated that explains the effect of the laser pulse on the spin system. We have experimentally determined the population of the relevant spin states as a function of the duration of the laser pulse by measuring Rabi oscillations and Ramsey-type free-induction decays. The experimental data have been analyzed to determine the pumping rates of the rate equation model.