Related papers: Two-cavity-mediated photon-pair emission by one atom

Two-cavity-mediated photon-pair emission by one atom

URL: http://arxiv.org/abs/2501.01891v1
Date: Fri, 03 Jan 2025 16:55:32 GMT
Title: Two-cavity-mediated photon-pair emission by one atom
Authors: Gianvito Chiarella, Tobias Frank, Pau Farrera, Gerhard Rempe,
Abstract summary: We report on a source based on a single atom with three energy levels in ladder configuration and coupled to two optical fiber cavities. We efficiently generate photon pairs with in-fiber emission efficiency of $eta_mathrmpair=16(1)%$ and study their temporal correlation properties.
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Abstract: Photon-pair sources are widely used in quantum optics and quantum information experiments. Despite their broad deployment, there has not yet been an on-demand implementation with efficient into-fiber photon generation and high single-photon purity. Here we report on such a source based on a single atom with three energy levels in ladder configuration and coupled to two optical fiber cavities. We efficiently generate photon pairs with in-fiber emission efficiency of $\eta_{\mathrm{pair}}=16(1)\%$ and study their temporal correlation properties. We simulate theoretically a regime with strong atom-cavity coupling and find that photons are directly emitted from the ground state, i.e. without atomic population in any intermediate state. We propose a scenario to observe such a double-vacuum-stimulated effect experimentally.

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