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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.02702 |
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| _version_ | 1866910013643030528 |
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| author | Goswami, Sumit Chien, Cheng-Hsuan Sinclair, Neil Grinkemeyer, Brandon Bennetts, Shayne Chen, Ying-Cheng Jen, Hsiang-Hua |
| author_facet | Goswami, Sumit Chien, Cheng-Hsuan Sinclair, Neil Grinkemeyer, Brandon Bennetts, Shayne Chen, Ying-Cheng Jen, Hsiang-Hua |
| contents | The so-called state-carving protocol generates high-fidelity entangled states at an atom-cavity interface without requiring high cavity cooperativity. However, this protocol is limited to 50\% efficiency, which restricts its applicability. We propose a simple modification to the state-carving protocol to achieve efficient entanglement generation, with unit probability in principle. Unlike previous two-photon schemes, ours employs only one photon which interacts with the atoms twice - avoiding separate photon detections which causes irrecoverable probability loss. We present a detailed description and performance evaluation of our protocol under non-ideal conditions. High fidelity of 0.999 can be achieved with cavity cooperativity of only 34. Efficient state-carving paves the way for large-scale entanglement generation at cavity-interfaces for modular quantum computing, quantum repeaters and creating arbitrary shaped atomic graph states, essential for one-way quantum computing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02702 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Efficient and high-fidelity entanglement in cavity QED without high cooperativity Goswami, Sumit Chien, Cheng-Hsuan Sinclair, Neil Grinkemeyer, Brandon Bennetts, Shayne Chen, Ying-Cheng Jen, Hsiang-Hua Quantum Physics The so-called state-carving protocol generates high-fidelity entangled states at an atom-cavity interface without requiring high cavity cooperativity. However, this protocol is limited to 50\% efficiency, which restricts its applicability. We propose a simple modification to the state-carving protocol to achieve efficient entanglement generation, with unit probability in principle. Unlike previous two-photon schemes, ours employs only one photon which interacts with the atoms twice - avoiding separate photon detections which causes irrecoverable probability loss. We present a detailed description and performance evaluation of our protocol under non-ideal conditions. High fidelity of 0.999 can be achieved with cavity cooperativity of only 34. Efficient state-carving paves the way for large-scale entanglement generation at cavity-interfaces for modular quantum computing, quantum repeaters and creating arbitrary shaped atomic graph states, essential for one-way quantum computing. |
| title | Efficient and high-fidelity entanglement in cavity QED without high cooperativity |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2505.02702 |