Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity

• URL: http://arxiv.org/abs/2410.10787v1
• Date: Mon, 14 Oct 2024 17:53:48 GMT
• Title: Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity
• Authors: Brandon Grinkemeyer, Elmer Guardado-Sanchez, Ivana Dimitrova, Danilo Shchepanovich, G. Eirini Mandopoulou, Johannes Borregaard, Vladan Vuletić, Mikhail D. Lukin,
• Abstract summary: We introduce a platform for coupling single atoms in optical tweezers to a Fabry-Perot Fiber Cavity. We demonstrate fast qubit state readout with 99.960$+14_-24%$ fidelity and two methods for cavity-mediated entanglement generation with integrated error detection.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Neutral atom quantum processors are a promising platform for large-scale quantum computing. Integrating them with an optical cavity enables fast nondestructive qubit readout and access to fast remote entanglement generation for quantum networking. Here, we introduce a platform for coupling single atoms in optical tweezers to a Fabry-Perot Fiber Cavity. Leveraging the strong atom-cavity coupling, we demonstrate fast qubit state readout with 99.960$^{+14}_{-24}\%$ fidelity and two methods for cavity-mediated entanglement generation with integrated error detection. First, we use cavity-carving to generate a Bell state with 91(4)$\%$ fidelity and a 32(1)$\%$ success rate. Second, we perform a cavity-mediated gate with a deterministic entanglement fidelity of 52.5(18)$\%$, increased to 76(2)$\%$ with error detection. The new capabilities enabled by this platform pave the way towards modular quantum computing and networking.

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