On the limits of photon-mediated interactions in one-dimensional photonic baths

• URL: http://arxiv.org/abs/2003.07854v1
• Date: Mon, 16 Mar 2020 09:35:05 GMT
• Title: On the limits of photon-mediated interactions in one-dimensional photonic baths
• Authors: E. S\'anchez-Burillo, D. Porras, A. Gonz\'alez-Tudela
• Abstract summary: We show how photon-mediated interactions can always be written as a finite sum of exponentials, and thus can not display a power-law scaling. As an outlook, we show how by relaxing some of these conditions, power-law interactions can be obtained within certain windows, or even in the regime for the latter case.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The exchange of off-resonant propagating photons between distant quantum emitters induces coherent interactions among them. The range of such interactions, and whether they are accompanied by dissipation, depends on the photonic energy dispersion, its dimensionality, and/or the light-matter couplings. In this manuscript, we characterize the limits of photon-mediated interactions for the case of generic one-dimensional photonic baths under the typical assumptions, that are, having finite range hoppings for the photonic bath plus local and rotating-wave light-matter couplings. In that case, we show how, irrespective of the system's parameter, the coherent photon-mediated interactions can always be written as a finite sum of exponentials, and thus can not display a power-law asymptotic scaling. As an outlook, we show how by relaxing some of these conditions, e.g., going beyond local light-matter couplings (e.g., giant atoms) or with longer-range photon hopping models, power-law interactions can be obtained within certain distance windows, or even in the asymptotic regime for the latter case.

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