arXiv:1603.00321 · Physical Review A

Generating a perfect quantum optical vortex

Anindya Banerji, Ravindra Pratap Singh, Dhruba Banerjee, Abir Bandyopadhyay

Published Nov 21, 2016• 18 citations

Abstract

In this article we introduce an interesting quantum state, the perfect quantum optical vortex state which exhibits a highly localized distribution along a ring in the quadrature space. We examine its nonclassical properties using the Wigner function and the negativity volume. Such a quantum state can be a useful resource for quantum information processing and communication.

DOI: 10.1103/physreva.94.053838

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Comment on “Generating a perfect quantum optical vortex”

David Barral, Jesús Liñares

In a recent article, Banerji et al. introduced a novel quantum state of light, coined as the perfect quantum optical vortex state [Phys. Rev. A 94, 053838 (2016)] due to its mathematical similarity with the classical perfect vortex beam. This state is obtained by means of the Fourier transform of a Bessel-Gaussian vortex state, and the authors claim that this can be accomplished by means of a simple lens. Here, we will show that this statement is wrong since a lens cannot modify the quantum noise distribution related to the input optical quantum state and this has to be exchanged by an ``effective lens.''

arXiv:1710.08879Physical Review AOct 10, 20170 citations