Stimulated Brillouin Scattering-Induced All-Optical Spectrum Sensing

Kadum, Jaffar Emad; Das, Ranjan; Misra, Arijit; Schneider, Thomas

doi:10.1364/fio.2021.jtu1a.31

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…High resolution and accuracy have also been obtained with quadrature microwave frequency discriminators [61][62][63][64][65][66]. Adaptive spectrum sensing techniques based on group delay induced by Brillouin scattering in optical fiber has been shown to be able to temporally discriminate two-tone signals with a resolution of 60 MHz [67]. Modern spectrum analyzers can also provide robust and efficient ways to observe and discriminate between frequency modes.…”

Section: The Modelmentioning

confidence: 99%

Polarization-path-frequency entanglement using interferometry and frequency shifters

Majumdar¹,

Chandrashekar²

2022

J. Phys. B: At. Mol. Opt. Phys.

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Higher dimensional Hilbert space along with ability to control multiple degrees of freedom of photon and entangle them has enabled new quantum protocols for various quantum information processing applications. Here, we propose a scheme to generate and control polarization-path-frequency entanglement using the operative elements required to implement a polarization-controlled quantum walk in the path(position) space and frequency domain. Hyperentangled states manifests in the controlled dynamics using an interferometric setup where half-wave plates, beam-splitters and frequency shifters such as those based on the electro-optic effect are used to manipulate the polarization, path and frequency degrees of freedom respectively. The emphasis is on utilizing the polarization to influence the movement to a specific value in the frequency and position space. Negativity between the subspaces is calculated to demonstrate the controllability of the entanglement between them. Progress reported with experimental demonstration of realization of quantum walk using quantum states of light makes quantum walks a practical approach to generate hyperentangled states.

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