High-fidelity remote entanglement of trapped atoms mediated by time-bin photons

• URL: http://arxiv.org/abs/2406.01761v1
• Date: Mon, 3 Jun 2024 20:02:10 GMT
• Title: High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
• Authors: Sagnik Saha, Mikhail Shalaev, Jameson O'Reilly, Isabella Goetting, George Toh, Ashish Kalakuntla, Yichao Yu, Christopher Monroe,
• Abstract summary: Photonic interconnects between quantum processing nodes are likely the only way to achieve large-scale quantum computers and networks. We establish high-fidelity entanglement between remotely separated trapped atomic qubit memories mediated by photonic qubits stored in the timing of their pulses. Such time-bin encoding sensitivity removes to polarization errors, enables long-distance quantum communication, and is suppressing recoil to quantum memories with more than two states.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Photonic interconnects between quantum processing nodes are likely the only way to achieve large-scale quantum computers and networks. The bottleneck in such an architecture is the interface between well-isolated quantum memories and flying photons. We establish high-fidelity entanglement between remotely separated trapped atomic qubit memories, mediated by photonic qubits stored in the timing of their pulses. Such time-bin encoding removes sensitivity to polarization errors, enables long-distance quantum communication, and is extensible to quantum memories with more than two states. Using a measurement-based error detection process and suppressing a fundamental source of error due to atomic recoil, we achieve an entanglement fidelity of 97% and show that fidelities beyond 99.9% are feasible.

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