Quantum repeater node with free-space coupled trapped ions
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866917766805585920 |
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| author | Bergerhoff, Max Elshehy, Omar Kucera, Stephan Kreis, Matthias Eschner, Jürgen |
| author_facet | Bergerhoff, Max Elshehy, Omar Kucera, Stephan Kreis, Matthias Eschner, Jürgen |
| contents | The quantum repeater cell is a basic building block for a quantum network, as it allows to overcome the distance limitations due to unavoidable fiber loss in direct transmission. We demonstrate the implementation of a quantum repeater cell, based on two free-space coupled $^{40}$Ca$^+$ ions in the same trap that act as quantum memories. We demonstrate the asynchronous generation of atom-photon and photon-photon entanglement by controlled emission of single photons from the individually addressed ions and entanglement swapping. We discuss the fidelity as well as the scaling of the generated rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_14805 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quantum repeater node with free-space coupled trapped ions Bergerhoff, Max Elshehy, Omar Kucera, Stephan Kreis, Matthias Eschner, Jürgen Quantum Physics The quantum repeater cell is a basic building block for a quantum network, as it allows to overcome the distance limitations due to unavoidable fiber loss in direct transmission. We demonstrate the implementation of a quantum repeater cell, based on two free-space coupled $^{40}$Ca$^+$ ions in the same trap that act as quantum memories. We demonstrate the asynchronous generation of atom-photon and photon-photon entanglement by controlled emission of single photons from the individually addressed ions and entanglement swapping. We discuss the fidelity as well as the scaling of the generated rate. |
| title | Quantum repeater node with free-space coupled trapped ions |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2312.14805 |