Preparing Atoms in Hyperfine State F=2: Optically Pumping?

In summary, the conversation discusses the technique of optical pumping and its ability to prepare atoms in specific states, with a question about whether there is a technique for preparing atoms in a state with a lower mF. The response suggests using the opposite circular polarization of light and precise selection of transitions to achieve this, but notes that it is more commonly used for complicated atoms at low temperatures.
  • #1
Niles
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0
Hi guys

As far as I have understood the technique of optical puming (OP), then if we look at the hyperfine state F=2 (for example), then OP can be used to prepare the atoms in the state F=2, mF=2, but not any other (i.e., lower) mF. Is there no technique for preparing atoms in a state with a lower mF?


Niles.
 
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  • #2
Well, you can get mF=-2 by using the opposite circular polarization of the light you are pumping with. To get the inbetween states you need the atomic lines and your laser lines to be very narrow to select precisely the transitions you want. Some low temp atomic gas groups use multiple lasers tuned to just the right transitions to predominantly take the atoms along a specific path of transitions, so this in principle would be possible (however they aren't trying to get to the mF inbetween states, they are just working with much more complicated atoms).
 
  • #3
Thanks!
 

1. What is optically pumping?

Optically pumping is a process in which atoms are excited from a lower energy state to a higher energy state using light. This can be achieved by shining a laser on the atoms, causing them to absorb photons and transition to a higher energy level.

2. Why is optically pumping used for preparing atoms in hyperfine state F=2?

Optically pumping is used to prepare atoms in specific hyperfine states because it allows for precise control over the population of different energy levels. By tuning the laser to the specific energy level of interest, we can selectively excite atoms in that state and prepare them for further experiments or applications.

3. What is the hyperfine state F=2?

F=2 refers to the angular momentum quantum number of the atom's nucleus in the hyperfine structure. This value determines the energy level of the atom and can be manipulated through techniques such as optical pumping. In F=2, the nucleus has an angular momentum of 2, making it a higher energy state than F=1 or F=0.

4. How is optically pumping used in the preparation of atoms in hyperfine state F=2?

In the process of preparing atoms in F=2, a laser is used to excite the atoms to a higher energy level. This can be achieved by tuning the laser to the specific energy level of F=2 and directing it at a sample of atoms. The laser will cause the atoms to absorb photons and transition to F=2, resulting in a higher population of atoms in that state.

5. What are the potential applications of preparing atoms in hyperfine state F=2?

Preparing atoms in F=2 can have various applications in fields such as quantum computing, atomic clocks, and precision measurements. By controlling the population of atoms in this state, we can manipulate their interactions and properties, making them useful for these and other applications.

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