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Open Quantum Systems Decoherence Photonic Quantum Computing

Broadband quasi-PT Symmetry Sustained by Inhomogeneous Broadening of the Spectral Line

arXiv
Authors: D. M. Tsvetkov, V. A. Bushuev, V. V. Konotop, B. I. Mantsyzov

Year

2018

Paper ID

23277

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

Abstract

It is shown that inhomogeneous broadening of the spectral line of active impurities may sustain simultaneously parity (P) and time (T) symmetries of a medium, in a finite range of field frequencies, what is forbidden by the causality principle in media without broadening. If a spectral width of a propagating pulse is less than the inhomogeneous broadening, the medium for such a pulse becomes quasi-PT symmetric. The effect of the broadband quasi-PT symmetry in a finite frequency domain, is illustrated on examples of unidirectional diffraction of pulses in Bragg and Laue geometries, propagating in photonic crystals.

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  • This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
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  • It is shown that inhomogeneous broadening of the spectral line of active impurities may sustain simultaneously parity (P) and time (T) symmetries of a medium, in a finite range...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1811.07324 [2] arXiv https://arxiv.org/abs/1811.07324 [3] Publisher https://arxiv.org/abs/1811.07324

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