Astronomical interferometry using continuous variable quantum teleportation
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866916928420839424 |
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| author | Wang, Yunkai Zhang, Yujie Lorenz, Virginia O. |
| author_facet | Wang, Yunkai Zhang, Yujie Lorenz, Virginia O. |
| contents | We propose a method to build an astronomical interferometer using continuous variable quantum teleportation to overcome the transmission loss between distant telescopes. The scheme relies on two-mode squeezed states shared by distant telescopes as entanglement resources, which are distributed using continuous variable quantum repeaters. We find the optimal measurement on the teleported states, which uses beam-splitters and photon-number-resolved detection. Compared to prior proposals relying on discrete states, our scheme has the advantages of using linear optics to implement the scheme without wasting stellar photons, and making use of multiphoton events, which are regarded as noise in previous discrete schemes. We also outline the parameter regimes in which our scheme outperforms the direct detection method, schemes utilizing distributed discrete-variable entangled states, and local heterodyne techniques. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2308_12851 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Astronomical interferometry using continuous variable quantum teleportation Wang, Yunkai Zhang, Yujie Lorenz, Virginia O. Quantum Physics We propose a method to build an astronomical interferometer using continuous variable quantum teleportation to overcome the transmission loss between distant telescopes. The scheme relies on two-mode squeezed states shared by distant telescopes as entanglement resources, which are distributed using continuous variable quantum repeaters. We find the optimal measurement on the teleported states, which uses beam-splitters and photon-number-resolved detection. Compared to prior proposals relying on discrete states, our scheme has the advantages of using linear optics to implement the scheme without wasting stellar photons, and making use of multiphoton events, which are regarded as noise in previous discrete schemes. We also outline the parameter regimes in which our scheme outperforms the direct detection method, schemes utilizing distributed discrete-variable entangled states, and local heterodyne techniques. |
| title | Astronomical interferometry using continuous variable quantum teleportation |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2308.12851 |