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arXiv · 2312.11104

Coupling light to an atomic tweezer array in a cavity

Yakov Solomons·Inbar Shani·Ofer Firstenberg·Nir Davidson·Ephraim Shahmoon
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Abstract

We consider the coupling of light, via an optical cavity, to two-dimensional atomic arrays whose lattice spacing exceeds the wavelength of the light. Such 'superwavelength' spacing is typical of optical tweezer arrays. While subwavelength arrays exhibit strong atom-photon coupling, characterized by high optical reflectivity in free space, the coupling efficiency of superwavelength arrays is reduced due to collective scattering losses to high diffraction orders. We show that a moderate-finesse cavity overcomes these losses. As the scattering losses peak at certain discrete values of the lattice spacing, the spacing can be optimized to achieve efficient atom-photon coupling in the cavity. Our cavity-QED theory properly accounts for collective dipolar interactions mediated by the lossy, non-cavity-confined photon modes and for finite-size effects of both the array and the light field. These findings pave the way to harnessing the versatility of tweezer arrays for efficient atom-photon interfaces in applications of quantum computing, networking, and nonlinear optics.

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Yakov Solomons, Inbar Shani, Ofer Firstenberg, Nir Davidson, Ephraim Shahmoon. 2023-12-18. Coupling light to an atomic tweezer array in a cavity. https://arxiv.org/abs/2312.11104

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