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Title: Recursive quantum detector tomography
Authors: Zhang, L.
Datta, A.
Coldenstrodt-Ronge, H.B.
Jin, X.-M. 
Eisert, J.
Plenio, M.B.
Walmsley, I.A.
Issue Date: Nov-2012
Citation: Zhang, L., Datta, A., Coldenstrodt-Ronge, H.B., Jin, X.-M., Eisert, J., Plenio, M.B., Walmsley, I.A. (2012-11). Recursive quantum detector tomography. New Journal of Physics 14 : -. ScholarBank@NUS Repository.
Abstract: Conventional tomographic techniques are becoming increasingly infeasible for reconstructing the operators of quantum devices of growing sophistication. We describe a novel tomographic procedure using coherent states, which begins by reconstructing the diagonals of the operator and then each successive off-diagonal in a recursive manner. Each recursion is considerably more efficient than reconstructing the operator in its entirety, and each successive recursion involves fewer parameters. We apply our technique to reconstruct the positive-operator-valued measure corresponding to a recently developed coherent optical detector with phase sensitivity and number resolution. We discuss the effect of various parameters on the reconstruction accuracy. The results show the efficiency of the method and its robustness to experimental noise. © IOP Publishing and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
ISSN: 13672630
DOI: 10.1088/1367-2630/14/11/115005
Appears in Collections:Staff Publications

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