Homodyne detection for measuring internal quantum correlations of optical pulses
T. Opatrny, D. -G. Welsch, W. Vogel
Abstract
A new method is described for determining the quantum correlations at different times in optical pulses by using balanced homodyne detection. The signal pulse and sequences of ultrashort test pulses are superimposed, where for chosen distances between the test pulses their relative phases and intensities are varied from measurement to measurement. The correlation statistics of the signal pulse is obtained from the time-integrated difference photocurrents measured.
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