- 67

- 0

Good response but this isn't the case. You said:

Sure there is and this is the whole point of the study. Victors choice determines whether photons 1 and 4 will find strong correlations in all three bases. Here's more from the study.There is NO way for Victor to force one outcome over the other.

Again, which state Alice and Bob find photons 1 and 4 in is determined by Victor. If there's strong correlation between all three bases then Alice and Bob know it was a Bell state correlation (1). If they don't find this strong correlation between all 3 bases, they know it was a separable state correlation (0).In the entanglement swapping procedure, two pairs of entangled photons are produced, and one

photon from each pair is sent to Victor. The two other photons from each pair are sent to Alice and Bob,

respectively. If Victor projects his two photons onto an entangled state, Alice’s and Bob’s photons are entangled

although they have never interacted or shared any common past. What might be considered as even more puzzling is Peres’ idea of “delayed-choice for entanglement swapping” . In this gedanken experiment, Victor is free to choose either to project his two photons onto an entangled state and thus project Alice’s and Bob’s photons onto an entangled state, or to measure them individually and then project Alice’s and Bob’s photons onto a separable state. If Alice and Bob measure their photons’ polarization states before Victor makes his choice and projects his two photons either onto an entangled state or onto a separable state, it implies that whether their two photons are entangled (showing quantum correlations) or separable (showing classical

correlations) can be defined after they have been measured.