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- Title
Interference between spontaneous two-photon radiation from two macroscopic regions.
- Authors
Burlakov, A. V.; Klyshko, D. N.; Kulik, S. P.; Penin, A. N.; Chekhova, M. V.
- Abstract
Interference is observed between the spontaneous parametric radiation from two nonlinear crystals separated by a macroscopic air gap and excited in series by a common pump beam. The phase of the interference depends on the phase shifts at three frequencies. A simple quantum model agrees well with the experimental results and makes it possible to interpret the effect in terms of general vacuum fluctuations which give rise to the spontaneous emission of mutually coherent radiation from the two crystals. © 1997 American Institute of Physics.
- Subjects
CRYSTALS; RADIATION
- Publication
JETP Letters, 1997, Vol 65, Issue 1, p19
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.567323