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| Main Author: | |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2303.12456 |
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| _version_ | 1866910364950593536 |
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| author | Collins, Daniel |
| author_facet | Collins, Daniel |
| contents | Teleportation allows Alice to send a pre-prepared quantum state to Bob using only pre-shared entanglement and classical communication. Here we show that it is possible to teleport a state which is also $\it{post}$-selected. Post-selection of a state $Φ$ means that after Alice has finished her experiment she performs a measurement and only keeps runs of the experiment where the measurement outcome is $Φ$. We also demonstrate pre and post-selected $\it{port}$-based teleportation. Finally we use these protocols to perform instantaneous non-local quantum computation on pre and post-selected systems, and significantly reduce the entanglement required to instantaneously measure an arbitrary non-local variable of spatially separated pre and post-selected systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_12456 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Teleportation of Post-Selected Quantum States Collins, Daniel Quantum Physics Teleportation allows Alice to send a pre-prepared quantum state to Bob using only pre-shared entanglement and classical communication. Here we show that it is possible to teleport a state which is also $\it{post}$-selected. Post-selection of a state $Φ$ means that after Alice has finished her experiment she performs a measurement and only keeps runs of the experiment where the measurement outcome is $Φ$. We also demonstrate pre and post-selected $\it{port}$-based teleportation. Finally we use these protocols to perform instantaneous non-local quantum computation on pre and post-selected systems, and significantly reduce the entanglement required to instantaneously measure an arbitrary non-local variable of spatially separated pre and post-selected systems. |
| title | Teleportation of Post-Selected Quantum States |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2303.12456 |