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Open Quantum Systems Decoherence Photonic Quantum Computing

mathcal{PT}-symmetric microring laser-absorber

arXiv
Authors: Stefano Longhi, Liang Feng

Year

2014

Paper ID

8262

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

The lasing and coherent perfect absorption (CPA) properties of mathcal{PT}-symmetric microrings with mixed index and gain gratings, externally coupled to a bus waveguide, are theoretically investigated. For a complex grating at the mathcal{PT} symmetry breaking point, perfect unidirectional (either clockwise or counterclockwise) laser emission can be realized, however the grating does not discriminate longitudinal modes and CPA can not be simultaneously achieved. Above the grating mathcal{PT} symmetry breaking point, single mode emission and simultaneous CPA can be obtained, with unbalanced and controllable excitation of clockwise and counterclockwise modes in the ring.

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  • The lasing and coherent perfect absorption (CPA) properties of mathcalPT-symmetric microrings with mixed index and gain gratings, externally coupled to a bus waveguide, are...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1407.4672 [2] arXiv https://arxiv.org/abs/1407.4672 [3] Publisher https://arxiv.org/abs/1407.4672

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