Creating two-qudit maximally entangled quantum link through bulk
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914912951861248 |
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| author | Agarwal, Keshav Das Haldar, Sudip Kumar De, Aditi Sen |
| author_facet | Agarwal, Keshav Das Haldar, Sudip Kumar De, Aditi Sen |
| contents | We design a set-up for creating maximally entangled two-qudit links between distant nodes which are weakly coupled with interacting spin-s bulk (processor). We exhibit that such quantum links of arbitrary spin quantum number can be formed when the system is prepared at a very low temperature. We find that the Heisenberg and the bilinear-biquadratic (BBQ) spin-s models are the potential candidates to achieve the maximal entanglement in equilibrium. By eliminating the equilibrium requirement, we show that a completely polarized state in the bulk and a suitable qudit state in the link can evolve over time to produce a highly entangled state, as per the BBQ Hamiltonian with nearest- and next-nearest neighbor interactions. When the number of sites in the bulk grows, so does the maximum entanglement produced in dynamics. Further, both the static and the dynamical protocols presented here remain efficient even if the spin quantum numbers of the bulk and the connection are unequal. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_07649 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Creating two-qudit maximally entangled quantum link through bulk Agarwal, Keshav Das Haldar, Sudip Kumar De, Aditi Sen Quantum Physics Strongly Correlated Electrons We design a set-up for creating maximally entangled two-qudit links between distant nodes which are weakly coupled with interacting spin-s bulk (processor). We exhibit that such quantum links of arbitrary spin quantum number can be formed when the system is prepared at a very low temperature. We find that the Heisenberg and the bilinear-biquadratic (BBQ) spin-s models are the potential candidates to achieve the maximal entanglement in equilibrium. By eliminating the equilibrium requirement, we show that a completely polarized state in the bulk and a suitable qudit state in the link can evolve over time to produce a highly entangled state, as per the BBQ Hamiltonian with nearest- and next-nearest neighbor interactions. When the number of sites in the bulk grows, so does the maximum entanglement produced in dynamics. Further, both the static and the dynamical protocols presented here remain efficient even if the spin quantum numbers of the bulk and the connection are unequal. |
| title | Creating two-qudit maximally entangled quantum link through bulk |
| topic | Quantum Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2408.07649 |