Control of a single-photon router via an extra cavity

Controllable single-photon routing plays an important role in quantum networks. We investigate single-photon scattering in two one-dimensional (1D) waveguides by a three-level emitter with a cascade configuration, which is a dipole coupled to an extra cavity. The tunneling path for the transmission...

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Bibliographic Details
Published in:	Applied physics letters Vol. 123; no. 21
Main Authors:	Luo, Yi-Ke, Yang, Ya, Lu, Jing, Zhou, Lan
Format:	Journal Article
Language:	English
Published:	Melville American Institute of Physics 20-11-2023
Subjects:	Applied physics Controllability Dipoles Emitters Photon scatter Photons Waveguides
Online Access:	Get full text
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Summary:	Controllable single-photon routing plays an important role in quantum networks. We investigate single-photon scattering in two one-dimensional (1D) waveguides by a three-level emitter with a cascade configuration, which is a dipole coupled to an extra cavity. The tunneling path for the transmission of a single photon is switched by whether the extra cavity contains photons. For the setup, the Autler–Townes splitting is modulated by the extra cavity, in which the transmission valley (reflection range) width is tunable in terms of the number of photons in the extra cavity. Our investigation will be beneficial to single-photon routing in quantum networks using quantifiable photon numbers in an extra cavity.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/5.0168808