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.

CHIANELLO M, TUMMINELLO M, VAGLICA A, VETRI G (2004). Quantum erasure within the optical Stern-Gerlach model. PHYSICAL REVIEW A, 69(5), 053403-1-053403-6 [10.1103/PhysRevA.69.053403].

Quantum erasure within the optical Stern-Gerlach model

TUMMINELLO, Michele;VAGLICA, Aloisio;VETRI, Giuseppa Antonia
2004-01-01

Abstract

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.
2004
CHIANELLO M, TUMMINELLO M, VAGLICA A, VETRI G (2004). Quantum erasure within the optical Stern-Gerlach model. PHYSICAL REVIEW A, 69(5), 053403-1-053403-6 [10.1103/PhysRevA.69.053403].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/10762
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