High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913937143889920 |
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| author | Saha, Sagnik Shalaev, Mikhail O'Reilly, Jameson Goetting, Isabella Toh, George Kalakuntla, Ashish Yu, Yichao Monroe, Christopher |
| author_facet | Saha, Sagnik Shalaev, Mikhail O'Reilly, Jameson Goetting, Isabella Toh, George Kalakuntla, Ashish Yu, Yichao Monroe, Christopher |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_01761 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-fidelity remote entanglement of trapped atoms mediated by time-bin photons Saha, Sagnik Shalaev, Mikhail O'Reilly, Jameson Goetting, Isabella Toh, George Kalakuntla, Ashish Yu, Yichao Monroe, Christopher Quantum Physics Applied Physics Atomic Physics 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. |
| title | High-fidelity remote entanglement of trapped atoms mediated by time-bin photons |
| topic | Quantum Physics Applied Physics Atomic Physics |
| url | https://arxiv.org/abs/2406.01761 |