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arXiv · 2310.19115

Photon Bound States in Coupled Waveguides

Björn Schrinski·Johan A. Brimer·Anders S. Sørensen
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Abstract

Photon bound states have been identified as particular solutions to the scattering of two photons from a single emitter, but from these results the full nature of these states remains elusive. We study a novel, clear and unambiguous signature that these bound states are truly bound. To this end we consider a new configuration of close-by waveguides, each chirally coupled to two-level emitters. We show that in this system the photon bound states behave like rigid molecules, where photons do not tunnel individually but rather collectively, such that there is rarely a single photon in each waveguide. We further identify new classes of bound states in this system.

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Björn Schrinski, Johan A. Brimer, Anders S. Sørensen. 2023-10-29. Photon Bound States in Coupled Waveguides. https://arxiv.org/abs/2310.19115

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