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ABSTRACT:
SUBMITTER: Lahteenmaki P
PROVIDER: S-EPMC5007450 | biostudies-literature | 2016 Aug
REPOSITORIES: biostudies-literature
Lähteenmäki Pasi P Paraoanu Gheorghe Sorin GS Hassel Juha J Hakonen Pertti J PJ
Nature communications 20160826
The existence of vacuum fluctuations is one of the most important predictions of modern quantum field theory. In the vacuum state, fluctuations occurring at different frequencies are uncorrelated. However, if a parameter in the Lagrangian of the field is modulated by an external pump, vacuum fluctuations stimulate spontaneous downconversion processes, creating squeezing between modes symmetric with respect to half of the frequency of the pump. Here we show that by double parametric pumping of a ...[more]