Optical implementation of two-qubit nonlocal generalized quantum measurement

产生超纠缠光子对的光学设置已经由最终测量阶段完成，沿着的是用于执行系统状态（偏振自由度）和仪表状态（到达时间自由度）之间的耦合的电子设备。初始对准导致干涉仪输出的可见度不足，这迫使我们改进原始设计，并导致实验实施和获得结果的一些延迟。超导纳米线单光子探测器已经完全安装完毕，现在可以使用了。到目前为止，所有关于没有最大纠缠米态的非局域测量的理论结果都已经总结在一篇论文中，该论文已经上传到arXiv上，并将很快提交给同行评审的期刊。

The optical setup to generate the hyper entangled photon pair has been completed by the final measurement stage, along with the electronics that are used to execute the coupling between the system state (polarization degree-of-freedom) and the meter state (time-of-arrival degree-of-freedom). The initial alignment yielded insufficient visibility at the output of the interferometer, which forced us to refine the original design and led to some delay in implementing the experiment and getting results. The superconducting nanowire single-photon detectors have been completely installed and are now ready to be used. All the theoretical results about nonlocal measurements without maximally-entangled meter states obtained so far have been summarized in a paper that has been uploaded on the arXiv, and which is to be submitted to a peer-reviewed journal soon.