Abstract
In studying the practical design of a quantum antenna with given spatial correlations, the authors show that the antenna's initial quantum state is at least as important as the spatial current distributions. Applying their state-inference procedure to a simple antenna (a linear one-dimensional array of equidistant quantum dots, trapped atoms, or superconducting qubits), they synthesize the initial states to generate drastically different emitted fields, for co- and contradirectionally entangled photons, complete suppression in the far field, or a nearly homogeneous far-field distribution---pointing to a host of applications in quantum optics and photonics.
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