Linear-optical fusion boosted by high-dimensional entanglement
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866908605033218048 |
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| author | Yamazaki, Tomohiro Azuma, Koji |
| author_facet | Yamazaki, Tomohiro Azuma, Koji |
| contents | We propose a quantum measurement that probabilistically projects a pair of qudits of dimension $d$ onto a Bell state in a two-qubit subspace. It can be performed using linear-optical circuits with the success probabilities of $1-d^{-1}$ without ancilla photons and $1-d^{-(k+1)}$ with $2(2^{k}-1)$ ancilla photons. It allows us to entangle two independently-prepared high-dimensional entangled states two-dimensionally with higher probabilities than ones of linear-optical fusion gates on qubits. As an application, we propose a fast quantum repeater protocol with three-qudit GHZ states and quantum memories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_10893 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Linear-optical fusion boosted by high-dimensional entanglement Yamazaki, Tomohiro Azuma, Koji Quantum Physics We propose a quantum measurement that probabilistically projects a pair of qudits of dimension $d$ onto a Bell state in a two-qubit subspace. It can be performed using linear-optical circuits with the success probabilities of $1-d^{-1}$ without ancilla photons and $1-d^{-(k+1)}$ with $2(2^{k}-1)$ ancilla photons. It allows us to entangle two independently-prepared high-dimensional entangled states two-dimensionally with higher probabilities than ones of linear-optical fusion gates on qubits. As an application, we propose a fast quantum repeater protocol with three-qudit GHZ states and quantum memories. |
| title | Linear-optical fusion boosted by high-dimensional entanglement |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2407.10893 |