- #1
Niles
- 1,866
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Hi
Often in the context of multi-atom systems, such as in cavity QED, it is customary to introduce a so-called "collective pseudospin operator". An example of this is for the inversion for some atom j, [itex]\sigma_{j, z}[/itex], which becomes
[itex]
\sum_{j} \sigma_{z, j} = \sigma_z
[/itex]
To me this seems very reasonable, we just try to describe the collectice behavior via a single operator. But what makes is "pseudospin"?
Niles.
Often in the context of multi-atom systems, such as in cavity QED, it is customary to introduce a so-called "collective pseudospin operator". An example of this is for the inversion for some atom j, [itex]\sigma_{j, z}[/itex], which becomes
[itex]
\sum_{j} \sigma_{z, j} = \sigma_z
[/itex]
To me this seems very reasonable, we just try to describe the collectice behavior via a single operator. But what makes is "pseudospin"?
Niles.