- #1
naima
Gold Member
- 938
- 54
Hi PFs
whith atoms in the ground level |g> we can prepare them in the first excited energy level |e> by giving them the transition energy with a laser. if one photon is absorbed it will be in |e>.
I read that to prepare a |e> + |g> state i can use a ##\pi/2## pulse with this same laser.
What is the trick to get a such a state and not a 50/50 mixture of the two states (or to get this mixture)?
whith atoms in the ground level |g> we can prepare them in the first excited energy level |e> by giving them the transition energy with a laser. if one photon is absorbed it will be in |e>.
I read that to prepare a |e> + |g> state i can use a ##\pi/2## pulse with this same laser.
What is the trick to get a such a state and not a 50/50 mixture of the two states (or to get this mixture)?