Creating two-qudit maximally entangled quantum link through bulk

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.

Quantum Physics (quant-ph); Strongly Correlated Electrons (cond-mat.str-el)

arXiv:2408.07649 [quant-ph]

(or arXiv:2408.07649v2 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2408.07649 Focus to learn more arXiv-issued DOI via DataCite

Phys. Rev. A 113, 052424 (2026)

https://doi.org/10.1103/1cgl-m12y Focus to learn more DOI(s) linking to related resources

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