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Generation of continuous-wave broadband entangled beams using periodically poled lithium niobate waveguides
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10.1063/1.2437057
/content/aip/journal/apl/90/4/10.1063/1.2437057
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2437057
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup for generation of broadband entangled beams. HWP: half wave plate, PBS: polarization beam splitter, PPLN-WG: periodically poled lithium niobate waveguide, LO: local oscillator, SA: spectrum analyzer. The ellipses indicate the squeezed quadratures of each beam.

Image of FIG. 2.
FIG. 2.

Noise measurement results on a squeezed light beam generated by a PPLN waveguide. These are recorded by one of the homodyne detectors after passing through a symmetric beam splitter. (a) is the raw results including the detector’s noise. (b) is the results after compensation. The vacuum noise level is normalized to and the effect of the detector’s noise is subtracted. In each figure, traces (i), (ii), and (iii) show the noise levels of a vacuum, squeezed quadrature, and antisqueezed quadrature respectively. In Fig. (a), trace (iv) represents the detector’s noise. The LO power is set to , resolution bandwidth (RBW) is , and video bandwidth (VBW) is . All traces are averaged ten times.

Image of FIG. 3.
FIG. 3.

Results on the inseparability criterion, . (i) and (ii) represent at RBW before and after subtracting the effects of detector’s noise, respectively. Squares and triangles are results at RBW before and after noise compensation.

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/content/aip/journal/apl/90/4/10.1063/1.2437057
2007-01-25
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Generation of continuous-wave broadband entangled beams using periodically poled lithium niobate waveguides
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2437057
10.1063/1.2437057
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