标题： 被证实的无噪声放大和衰减非高斯光态 显示英文标题

标题： Heralded noiseless amplification and attenuation of non-gaussian states of light

摘要： 我们研究光的非高斯态在概率无噪声放大和衰减作用下的行为。 令人惊讶的是，我们发现平均场振幅可能在无噪声放大的过程中减少——或在无噪声衰减的过程中增加，这是一种高斯态无法表现出的反直觉效应。 这种显著现象可以使用实验上可实现的非高斯态进行测试，例如单光子添加的相干态。 我们提出了一种实验方案，该方案对于主要的实验不完善因素（如低效的单光子探测和不完善的光子添加）具有鲁棒性。 特别是，我们认为利用当前技术观察无噪声衰减引起的平均场放大应该是可行的。 显示英文摘要

摘要： We examine the behavior of non-Gaussian states of light under the action of probabilistic noiseless amplification and attenuation. Surprisingly, we find that the mean field amplitude may decrease in the process of noiseless amplification -- or increase in the process of noiseless attenuation, a counterintuitive effect that Gaussian states cannot exhibit. This striking phenomenon could be tested with experimentally accessible non-Gaussian states, such as single-photon added coherent states. We propose an experimental scheme, which is robust with respect to the major experimental imperfections such as inefficient single-photon detection and imperfect photon addition. In particular, we argue that the observation of mean field amplification by noiseless attenuation should be feasible with current technology.