Toward an optical evidence of quantum interference between macroscopically distinct states

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 58, Issue 5, 1998, Pages 3472-3476

  Montina, A ^a   Arecchi, F T ^a,b  

^a UNIVERSITY OF FLORENCE   (Italy)

^b ISTITUTO NAZIONALE DI OTTICA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0007947344     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.58.3472     Document Type: Article

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15. As a matter of fact, the vacuum state is such only if (Formula presented) is an exact coherent state. Since, however, the combination of first and second OPA yields only approximate coherent states, we have a residual probability of nonzero photon detection in what we denoted as the (Formula presented) state (the “empty” side of the interferometer).
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