发表机构
Research and Development Center for Wide Bandgap Semiconductors; State Key Laboratory of Semiconductor Physics and Chip Technologies, Institute of Semiconductors, Chinese Academy of Sciences; Center of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences（宽禁带半导体研发中心; 中国科学院半导体研究所半导体物理与芯片技术国家重点实验室; 中国科学院大学材料科学与光电/激光技术中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究后选择冯·诺依曼测量对双模纠缠相干态非经典性质的影响，发现中等耦合的异常弱值可增强压缩、反聚束、亚泊松统计、模间关联和纠缠，提供了一种可调的ECSs工程方法。
AI 中文摘要
我们研究了后选择冯·诺依曼测量如何改变双模纠缠相干态（ECSs）的非经典性质。从条件指针态出发，我们表征了压缩、光子统计、模间关联、纠缠、保真度以及后选择概率。具有中等耦合强度的异常弱值增强了压缩、反聚束、亚泊松统计、模间关联和双模纠缠，而保真度则捕捉了从弱微扰到强可区分性的交叉。这些结果表明后选择是工程化ECSs的一种可调方法。
英文摘要
We investigate how post-selected von Neumann measurements modify the nonclassical properties of two-mode entangled coherent states (ECSs). From the conditional pointer state, we characterize squeezing, photon statistics, intermode correlations, entanglement, fidelity, and post-selection probability. Anomalous weak values with moderate coupling enhance squeezing, antibunching, sub-Poissonian statistics, intermode correlations, and bipartite entanglement, while fidelity captures the crossover from weak perturbation to strong distinguishability. These results demonstrate post-selection as a tunable approach to engineering ECSs.
