期刊
OPTICS LETTERS
卷 41, 期 10, 页码 2149-2152出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.41.002149
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资金
- Seventh Framework Programme (FP7) [308803, 609405]
- Czech Science Foundation [GB14-36681G, 13-27533J]
In a direct detection scheme, we observed 7.8 dB of twin-beam squeezing for multi-mode two-color squeezed vacuum generated via parametric downconversion. Applying postselection, we conditionally prepared a sub-Poissonian state of light containing 6.3 . 10(5) photons per pulse on the average with the Fano factor 0.63 +/- 0.01. The scheme can be considered as the heralded preparation of pulses with the mean energy varying between tens and hundreds of fJ and the uncertainty considerably below the shot-noise level. Such pulses can be used in metrology (for instance, for radiometer calibration), as well as for probing multi-mode non-linear optical effects. (C) 2016 Optical Society of America
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