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arXiv · 2408.07649

Creating two-qudit maximally entangled quantum link through bulk

Keshav Das Agarwal·Sudip Kumar Haldar·Aditi Sen De
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Abstract

We design a setup for creating almost maximally entangled two-qudit link between distant nodes which are weakly coupled with the interacting spin-s bulk (processor). We exhibit that such a quantum link between spins of arbitrary spin quantum number can be formed when the system is prepared at sufficiently low temperature. We find that the Heisenberg and the bilinear-biquadratic (BBQ) spin-1 models are the potential candidates to obtain long-distance near-maximal entanglement in equilibrium. Beyond the static regime, we further show that initializing the bulk in a fully polarized state and the link in an appropriate qudit state allows the system to dynamically evolve into a highly entangled state under both Heisenberg and BBQ Hamiltonians. Our findings reveal that both the static and the dynamical protocols presented here remain efficient towards creating highly entangled two-qudit states even if the spin quantum numbers of the bulk is lower than that of the link.

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Keshav Das Agarwal, Sudip Kumar Haldar, Aditi Sen De. 2024-08-14. Creating two-qudit maximally entangled quantum link through bulk. https://doi.org/10.1103/1cgl-m12y

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