Generation of continuous variable quantum entanglement using a fiber optical parametric amplifier

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xueshi Guo
  • Nannan Liu
  • Yuhong Liu
  • Xiaoying Li
  • Z. Y. Ou

Detail(s)

Original languageEnglish
Pages (from-to)653-656
Journal / PublicationOptics Letters
Volume41
Issue number3
Publication statusPublished - 1 Feb 2016
Externally publishedYes

Abstract

We demonstrate the experimental generation of quadrature amplitude entanglement in the 1550 nm band by using a fiber optical parametric amplifier. The measured noise variances of the difference and sum of the quadrature amplitudes of the pulsed signal and idler twin beams fall below the shot noise limit by about 1 and 0.8 dB (4.2 and 3.6 dB after the correction for efficiency), respectively, showing that the inseparability criterion of Einstein-Podolsky-Rosen entanglement I < 2 is satisfied. Our investigation reveals that the quality of the measured entanglement can be further improved by increasing the transmission efficiency of the twin beams and by optimizing the temporal mode matching of the two sets of homodyne detection systems.

Bibliographic Note

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Citation Format(s)

Generation of continuous variable quantum entanglement using a fiber optical parametric amplifier. / Guo, Xueshi; Liu, Nannan; Liu, Yuhong; Li, Xiaoying; Ou, Z. Y.

In: Optics Letters, Vol. 41, No. 3, 01.02.2016, p. 653-656.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review