论文标题
使用连续模式形式主义的光子增添相干状态
Photon-added coherent states using the continuous-mode formalism
论文作者
论文摘要
将光子添加到与连贯状态相同的模式中产生的非经典状态，具有有趣的特征，包括正交挤压和亚硫代sudpoissonian光子数字分布。光子增添相干（PAC）状态的挤压性质可能在量子传感应用中提供了优势。以前的理论工作已经对PAC状态进行了单模处理。在这里，我们使用一种连续模式方法，使我们能够对PAC状态脉冲进行建模。我们研究了与变化的时间和光谱重叠叠加的单光子和相干状态波袋的特性。我们表明，即使没有完美的重叠，该状态也表现出亚硫化次数的分布，二阶量子相关性和对弱相干状态的正交挤压。我们还包括波导中的传播损失，并研究了PAC状态脉冲的忠诚度和其他特性如何受到影响。
The addition of a photon into the same mode as a coherent state produces a nonclassical state that has interesting features, including quadrature squeezing and a sub-Poissonian photon-number distribution. The squeezed nature of photon-added coherent (PAC) states potentially offers an advantage in quantum sensing applications. Previous theoretical works have employed a single-mode treatment of PAC states. Here, we use a continuous-mode approach that allows us to model PAC state pulses. We study the properties of a single-photon and coherent state wavepacket superimposed with variable temporal and spectral overlap. We show that, even without perfect overlap, the state exhibits a sub-Poissonian number distribution, second-order quantum correlations and quadrature squeezing for a weak coherent state. We also include propagation loss in waveguides and study how the fidelity and other properties of PAC state pulses are affected.
