Teleportation-based filtering for gravitational-wave detectors
Fuente:
arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866916969782968320 |
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| author | Nishino, Yohei |
| author_facet | Nishino, Yohei |
| contents | Employing the principle of quantum teleportation in gravitational-wave detectors provides a method to address technical challenges associated with implementing quantum filters for squeezed-light injection. A recent proposal has shown that an arbitrary number of effective squeezing-angle rotations can be achieved by cascading quantum teleportation, yielding sensitivity equivalent to frequency-dependent pre-filtering. A natural question is whether the teleportation-based protocol can also realize frequency-dependent post-filtering. In this work, we examine this possibility and show that, with perfect teleportation fidelity, post-filtering can be fully implemented. In practice, however, various imperfections make the sensitivity nearly equivalent to that of teleportation-based pre-filtering. We apply this scheme to the low-frequency detector in the Einstein Telescope xylophone configuration and find that teleportation-based post-filtering could also be a candidate for the detector's design. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_20812 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Teleportation-based filtering for gravitational-wave detectors Nishino, Yohei General Relativity and Quantum Cosmology Quantum Physics Employing the principle of quantum teleportation in gravitational-wave detectors provides a method to address technical challenges associated with implementing quantum filters for squeezed-light injection. A recent proposal has shown that an arbitrary number of effective squeezing-angle rotations can be achieved by cascading quantum teleportation, yielding sensitivity equivalent to frequency-dependent pre-filtering. A natural question is whether the teleportation-based protocol can also realize frequency-dependent post-filtering. In this work, we examine this possibility and show that, with perfect teleportation fidelity, post-filtering can be fully implemented. In practice, however, various imperfections make the sensitivity nearly equivalent to that of teleportation-based pre-filtering. We apply this scheme to the low-frequency detector in the Einstein Telescope xylophone configuration and find that teleportation-based post-filtering could also be a candidate for the detector's design. |
| title | Teleportation-based filtering for gravitational-wave detectors |
| topic | General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/2509.20812 |