Hybrid communication assisted by coherent oscillator using resonant excitation of Nitrogen–vacancy center in diamond

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

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Author(s)

  • Faisal Nadeem
  • Faizan Raza
  • Kangkang Li
  • Huanrong Fan
  • Changbiao Li
  • Yanpeng Zhang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number127073
Journal / PublicationOptics Communications
Volume495
Online published1 May 2021
Publication statusPublished - 15 Sep 2021

Abstract

We propose the multi-channel hybrid communication assisted by a coherent oscillator, by configuring the diamond Nitrogen–vacancy center using spontaneous parametric four-wave mixing. For one-channel hybrid communication, composite signal of fluorescence (information) and Stokes (carrier) is sent to the receiver; information is recovered by subtracting intensities of composite signal and reference coherent signal (from coherent oscillator) at demodulator. Further, we achieved two-channel and three-channel hybrid communication through two-mode and three-mode intensity–noise correlation, respectively. Two-mode correlation of hybrid signal (produced through photon subtraction) and anti-Stokes demonstrates the nonclassical behavior by violating Cauchy–Schwarz inequality, verified through corresponding squeezing (−5 dB). Such phenomenon of non-classical behavior was also verified by non-Gaussian negativity of Wigner function. Our hybrid communication model is based on temporal width- and coherence time-contrast, which can be controlled by wavelength (power) of input beams. The coherence time-contrast is about 90%.

Research Area(s)

  • Coherent oscillator, Hybrid communication, Nitrogen–vacancy center in diamond

Citation Format(s)

Hybrid communication assisted by coherent oscillator using resonant excitation of Nitrogen–vacancy center in diamond. / Nadeem, Faisal; Raza, Faizan; Li, Kangkang; Fan, Huanrong; Ahmed, Irfan; Li, Changbiao; Zhang, Yanpeng.

In: Optics Communications, Vol. 495, 127073, 15.09.2021.

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