Counterfactual communication without a trace in the transmission channel
Counterfactual communication without a trace in the transmission channel
复制标题
DOI：
10.1038/s41534-023-00756-y
复制
发表时间：
2023-08
影响因子：
7.6
通讯作者：
W. Pan;Xiao Liu;Xiao-Ye Xu;Qin-Qin Wang-Qin;Ze-Di Cheng;Jian Wang;Zhao-Di Liu;Geng Chen;Zong-Quan Zhou;Chuan‐Feng Li;G. Guo;J. Dressel;L. Vaidman
中科院分区：
文献类型：
--
作者：
W. Pan;Xiao Liu;Xiao-Ye Xu;Qin-Qin Wang-Qin;Ze-Di Cheng;Jian Wang;Zhao-Di Liu;Geng Chen;Zong-Quan Zhou;Chuan‐Feng Li;G. Guo;J. Dressel;L. Vaidman
我们报告了一个实验实现的修改后的反事实的通信协议，消除了占主导地位的环境留下的痕迹通过传输通道的光子。相比，惠勒的标准推断过去的粒子路径，如在以前的协议中使用的，我们的跟踪标准提供了更强的支持的通信的反事实的索赔。我们验证了缺乏的痕迹留下的传输光子通过标记的传播臂的干涉仪设备由不同的频移，并发现收集的光子没有对应于传输通道的频移。作为原理的证明，我们反事实地传输具有足够保真度的快速响应代码图像以用手机扫描。
We report an experimental realization of a modified counterfactual communication protocol that eliminates the dominant environmental trace left by photons passing through the transmission channel. Compared to Wheeler’s criterion for inferring past particle paths, as used in prior protocols, our trace criterion provides stronger support for the claim of the counterfactuality of the communication. We verify the lack of trace left by transmitted photons via tagging the propagation arms of an interferometric device by distinct frequency-shifts and finding that the collected photons have no frequency shift which corresponds to the transmission channel. As a proof of principle, we counterfactually transfer a quick response code image with sufficient fidelity to be scanned with a cell phone.