论文标题
基于热碱原子中的非排效四波混合过程的光学参数振荡器中的连续变量纠缠
Continuous Variable Entanglement in an Optical Parametric Oscillator Based on a Nondegenerate Four Wave Mixing Process in Hot Alkali Atoms
论文作者
论文摘要
我们介绍了基于阈值高于阈值的热$^{85} $ rb蒸气中的四波混合的双谐振光学参数振荡器（OPO）生成的双光束之间的纠缠。这是对$χ^{（3）} $介质高于阈值的OPO中的第一个测量。我们重建了几种配置的协方差矩阵，并且在四个侧带模式状态的全图中，我们研究了所有可能的两部分之间的纠缠。我们显示出强大的纠缠产生，具有更强的生成，以实现特定的模式。对于该系统，我们表明原子密度是产生和量子相关性丧失的决定因素。通过接近碱原子原子共振的原子OPO产生的纠缠田的产生使自然整合到量子网络中。
We present the measurement of entanglement between twin beams generated with a doubly resonant optical parameter oscillator (OPO) based on four-wave mixing in hot $^{85}$Rb vapor above threshold. This is the first measurement of entanglement in an OPO with $χ^{(3)}$ media above threshold. We reconstruct the covariance matrix for several configurations and with a full picture of the four side band mode state, we study entanglement between all possible bi-partitions. We show a robust generation of entanglement with stronger generation for a specific pair of modes. For this system, we show that atomic density is a determinant factor for generation and loss of quantum correlations. The generation of entangled fields by an atomic OPO close to atomic resonance of alkali atoms enables natural integration into quantum networks.
