如果他们状态一样，这两个光子就在分束器一起出来。

If they are the same, the two photons will come out of the beam-splitter together.

youdao

如果他们状态一样，这两个光子就在分束器一起出来。

If they are the same, the two photons will come out of the beam-splitter together.

youdao