Laser Systems for High Fidelity Control and Entanglement of Neutral Atomic Qubits

• URL: http://arxiv.org/abs/2304.08402v1
• Date: Mon, 17 Apr 2023 16:11:30 GMT
• Title: Laser Systems for High Fidelity Control and Entanglement of Neutral Atomic Qubits
• Authors: C.J. Picken, I. Despard, A. Kelly, J.D. Pritchard, J.R.P. Bain, N. Hempler, G.T. Maker and G.P.A Malcolm
• Abstract summary: We present new photonics and electronics packages specifically tailored for scalable neutral atom quantum computing. A high power 1064 nm system for scalable qubit number, a phase locked system for high fidelity single qubit control, and robust cavity locked systems for high fidelity Rydberg operations.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present new photonics and electronics packages recently developed by M Squared Lasers specifically tailored for scalable neutral atom quantum computing; a high power 1064 nm system for scalable qubit number, a phase locked system for high fidelity single qubit control, and robust cavity locked systems for high fidelity Rydberg operations. We attain driven coherence times competitive with current state-of-the-art for both ground state Raman and ground-Rydberg transitions without cavity filtering, providing an excellent platform for neutral atom quantum computing. These systems are benchmarked by creating entangled Bell states across 7 atom pairs, where we measure a peak raw fidelity of $F\ge0.88(2)$ and a peak SPAM corrected of $F_C\ge0.93(3)$ via a two-qubit $CZ$ gate.

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