Sub-radiant states for imperfect quantum emitters coupled by a nanophotonic waveguide

• URL: http://arxiv.org/abs/2206.00573v1
• Date: Wed, 1 Jun 2022 15:34:56 GMT
• Title: Sub-radiant states for imperfect quantum emitters coupled by a nanophotonic waveguide
• Authors: Xiao-Liu Chu and Vasiliki Angelopoulou and Peter Lodahl and Nir Rotenberg
• Abstract summary: We investigate the optical interaction between two quantum emitters mediated by one-dimensional waveguides in a realistic solid-state environment. We show that as dephasing increases, the signatures of sub-radiance quickly vanish in intensity measurements. The work lays out a route to the experimental realization of sub-radiant states in nanophotonic waveguides containing solid-state emitters.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Coherent interactions between quantum emitters in tailored photonic structures is a fundamental building block for future quantum technologies, but remains challenging to observe in complex solid-state environments, where the role of decoherence must be considered. Here, we investigate the optical interaction between two quantum emitters mediated by one-dimensional waveguides in a realistic solid-state environment, focusing on the creation, population and detection of a sub-radiant state, in the presence of dephasing. We show that as dephasing increases, the signatures of sub-radiance quickly vanish in intensity measurements yet remain pronounced in photon correlation measurements, particularly when the two emitters are pumped separately so as to populate the sub-radiant state efficiently. The applied Green's tensor approach is used to model a photonic crystal waveguide, including the dependence on the spatial position of the integrated emitter. The work lays out a route to the experimental realization of sub-radiant states in nanophotonic waveguides containing solid-state emitters.

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