[2601.18976] Qubit-qudit entanglement switch in defect facilities with high-spin nuclei

View a PDF of the paper titled Qubit-qudit entanglement switch in defect facilities with high-spin nuclei, by W.-R. Hannes and Guido Burkard

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Summary:We suggest a scheme for accumulating entanglement between long-lived qudits supplied by central nuclear spins of defect facilities. Assuming a generic setting, the electron spin of every node acts because the communication qubit and could also be entangled with different nodes, e.g., by means of a spin-photon interface. The commonly out there Ising part of the hyperfine interplay is proven to facilitate repeated entanglement switch onto reminiscence qudits of arbitrary dimension $dle 2I+1$ with $I$ the nuclear spin quantum quantity. When $d$ is about to an integer energy of two, maximal entanglement might be generated deterministically and with out intermittent driving of nuclear spins. The scheme is relevant to a number of candidate programs, together with the $^{73}$Ge germanium emptiness in diamond.