Full quantum treatment of a light diode

F. Fratini and R. Ghobadi
Phys. Rev. A 93, 023818 – Published 12 February 2016

Abstract

Unidirectional light transport in one-dimensional nanomaterials at the quantum level is a crucial goal to achieve for upcoming computational devices. We here employ a fully quantum mechanical approach based on a master equation to describe unidirectional light transport through a pair of two-level systems coupled to a one-dimensional waveguide. By comparing with published semiclassical results, we find that the nonlinearity of the system is reduced, thereby reducing also the unidirectional light transport efficiency. Albeit not fully efficient, we find that the considered quantum system can work as a light diode with an efficiency of 60%. Our results may be used in quantum computation with classical and quantized light.

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  • Received 7 October 2015

DOI:https://doi.org/10.1103/PhysRevA.93.023818

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

F. Fratini* and R. Ghobadi

  • Atominstitut, Technische Universität Wien, Vienna, Austria

  • *filippo.fratini@tuwien.ac.at; fratini.filippo@gmail.com

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Issue

Vol. 93, Iss. 2 — February 2016

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