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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.01395 |
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| _version_ | 1866917812893646848 |
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| author | de Gliniasty, Grégoire Bagourd, Paul Draux, Sébastien Bourdoncle, Boris |
| author_facet | de Gliniasty, Grégoire Bagourd, Paul Draux, Sébastien Bourdoncle, Boris |
| contents | Entangling photons is a critical challenge for photonic quantum information processing: entanglement is a crucial resource for quantum communication and computation but can only be performed in a probabilistic manner when using linear optics. In this work, we leverage a two-photon state matrix representation to derive necessary and sufficient conditions on two-photon entangling operations with linear optics. We give a characterization of the input photonic states that can be used to prepare arbitrary two-qudit states in d-rail encoding with post-selection. We determine how many auxiliary photons are required to prepare any two-photon state with heralding. In addition, we present a construction for generalized post-selected n-qubit control-rotation gates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_01395 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Simple rules for two-photon state preparation with linear optics de Gliniasty, Grégoire Bagourd, Paul Draux, Sébastien Bourdoncle, Boris Quantum Physics Entangling photons is a critical challenge for photonic quantum information processing: entanglement is a crucial resource for quantum communication and computation but can only be performed in a probabilistic manner when using linear optics. In this work, we leverage a two-photon state matrix representation to derive necessary and sufficient conditions on two-photon entangling operations with linear optics. We give a characterization of the input photonic states that can be used to prepare arbitrary two-qudit states in d-rail encoding with post-selection. We determine how many auxiliary photons are required to prepare any two-photon state with heralding. In addition, we present a construction for generalized post-selected n-qubit control-rotation gates. |
| title | Simple rules for two-photon state preparation with linear optics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2405.01395 |