Generation of Total Angular Momentum Eigenstates in Remote Qubits
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We propose a scheme enabling the universal coupling of angular momentum of $N$ remote noninteracting qubits using linear optical tools only. Our system consists of $N$ single-photon emitters in a $Λ$-configuration that are entangled among their long-lived ground-state qubits through suitably designed measurements of the emitted photons. In this manner, we present an experimentally feasible algorithm that is able to generate any of the $2^N$ symmetric and nonsymmetric total angular momentum eigenstates spanning the Hilbert space of the $N$-qubit compound.
5 pages, 4 figures, improved presentation. Accepted in Physical Review A
5 pages, 4 figures, improved presentation. Accepted in Physical Review A