Recent content by Dorilian

I mean that the two photons arrive at the same time at each detector. Ok, I think that I got it, so, the coincidence time is useful to avoid a mismatch in the correlations.

So, why do we need to make them coincidence?

Ok, but, why is necessary that temporal synchronization?? Is it important for the entanglement? I understand that, I can measure the polarization on one photon and in that moment I know the polarization of the other photon, which I can measure in a later time, so I don´t understand why we need...

What about the quantum optics, quantum nanophysics and quantum information group of the University of Vienna? led by Anton Zeilinger.

What is the best place to do a PhD in quantum information? I want to do research on quantum entanglement and quantum teleportation.

In Young's experiment, would we see interference if we put a wave plate to rotate the polarization in one of the path of the beam?

In addition, 500 nm is Not infrared, however 1000nm is in the near infrared.

You are right!. The refractive index is 2, (but nu=3*10^14, I was taking ^-14), so the wavelength in the vacuum is 1000 nm.

It should not be 500 nm because that's the wavelength in the medium, so the vacumm wavelength should be different. The value of 3*10^-14 is strange (too small), so I don't know how did you get the 1000 nm.

That is not the wave function for the ground state, you should use the hermite polynomials.

How did you do the calculation?

Ok, so, we need to deduce what kind of entanglement we have to do the experiments. Thanks.

Good, are there any more examples?

If I give you a black box and two photons go out of it (not necessarily in opposite directions), how can we know if the photons are entangled?

What could be a good example or textbook problem which could be solved using quantum physics and classical physics in order to see the difference? If you wan to explain the differences to a non-physics student, what would you do? (Don´t use the blackbody radiation problem).