Phys. Rev. A 66, 053801 (2002) [8 pages]Application of quantum inequalities to quantum opticsReceived 26 March 2002; published 1 November 2002 We establish a connection between quantum inequalities, known from quantum-field theory on curved spacetimes, and the degree of squeezing in quantum-optical experiments. We prove an inequality which binds the reduction of the electric-field fluctuations to their duration. The bigger the level of fluctuation suppression the shorter its duration. As an example of an application of this inequality is the case of squeezed light whose phase is controlled with 1% accuracy for which we derive a limit of -15dB on the allowed degree of squeezing. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.053801
DOI:
10.1103/PhysRevA.66.053801
PACS:
42.50.Dv, 03.70.+k, 42.50.Lc
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