Entangling qubit registers via many-body states of ultracold atoms
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Inspired by the experimental measurement of the Rényi entanglement entropy in a lattice of ultracold atoms by Islam et al. [Nature (London) 528, 77 (2015)], we propose a method to entangle two spatially separated qubits using the quantum many-body state as a resource. Through local operations accessible in an experiment, entanglement is transferred to a qubit register from atoms at the ends of a one-dimensional chain. We compute the operational entanglement, which bounds the entanglement physically transferable from the many-body resource to the register, and discuss a protocol for its experimental measurement. Finally, we explore measures for the amount of entanglement available in the register after transfer, suitable for use in quantum information applications.
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Roger Melko, Chris Herdman, Dmitri Iouchtchenko, Pierre-Nicholas Roy, Adrian Del Maestro (2016). Entangling qubit registers via many-body states of ultracold atoms. UWSpace. http://hdl.handle.net/10012/13353