In the optical Stern-Gerlach effect the two branches in which the incoming atomic packet splits up can display interference pattern outside the cavity when a field measurement is made which erases the which-way information on the quantum paths the system can follow. On the contrary, the mere possibility to acquire this information causes a decoherence effect which cancels out the interference pattern. A phase-space analysis is also carried out to investigate on the negativity of the Wigner function and on the connection between its covariance matrix and the distinguishability of the quantum paths.
|Numero di pagine||6|
|Rivista||PHYSICAL REVIEW A|
|Stato di pubblicazione||Published - 2004|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics