A photon-interfaced ten qubit quantum network node
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929385487990784 |
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| author | Canteri, M. Koong, Z. X. Bate, J. Winkler, A. Krutyanskiy, V. Lanyon, B. P. |
| author_facet | Canteri, M. Koong, Z. X. Bate, J. Winkler, A. Krutyanskiy, V. Lanyon, B. P. |
| contents | We entangle each individual matter-qubit in a register of ten to a separate travelling photon. The qubits are encoded in a string of cotrapped atomic ions. By switching the trap confinement, ions are brought one at a time into the waist of an optical cavity and emit a photon via a laser-driven cavity-mediated Raman transition. The result is a train of photonic-qubits, each near-maximally entangled by their polarisation with a different ion-qubit in the string. An average ion-photon Bell state fidelity of 92(1)% is achieved, for an average probability for detecting each single photon of 9.1(8)%. The technique is directly scalable to larger ion-qubit registers and opens up the near-term possibility of entangling distributed networks of trapped-ion quantum processors, sensing arrays and clocks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_09480 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A photon-interfaced ten qubit quantum network node Canteri, M. Koong, Z. X. Bate, J. Winkler, A. Krutyanskiy, V. Lanyon, B. P. Quantum Physics We entangle each individual matter-qubit in a register of ten to a separate travelling photon. The qubits are encoded in a string of cotrapped atomic ions. By switching the trap confinement, ions are brought one at a time into the waist of an optical cavity and emit a photon via a laser-driven cavity-mediated Raman transition. The result is a train of photonic-qubits, each near-maximally entangled by their polarisation with a different ion-qubit in the string. An average ion-photon Bell state fidelity of 92(1)% is achieved, for an average probability for detecting each single photon of 9.1(8)%. The technique is directly scalable to larger ion-qubit registers and opens up the near-term possibility of entangling distributed networks of trapped-ion quantum processors, sensing arrays and clocks. |
| title | A photon-interfaced ten qubit quantum network node |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2406.09480 |