Abstract
The use of a photomultiplier to measure the reduction in counting statistics noise (from the usual N1/2 form) which is expected to occur for squeezed coherent light is shown to lead to no reduction or to an increase of the noise unless the number of photons in a fundamental measuring time of the photomultiplier is very large. This fundamental time is estimated to be less than 10−13 sec for ordinary detectors. A technique for using squeezed states for determining the time a photomultiplier takes to detect the presence of a photon is presented.
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References
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W. G. Unruh, “Quantum Noise in the Interferometer Detector,” inQuantum Optics, Experimental Gravitation, and Measurement Theory, P. Meystre and M. O. Scully, eds. (Plenum Press, New York, 1983); C. M. Caves,Phys. Rev. D 26, 1817 (1982).
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Unruh, W.G. The measurement of quantum noise reduction in squeezed states. Found Phys 16, 383–389 (1986). https://doi.org/10.1007/BF01882695
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DOI: https://doi.org/10.1007/BF01882695