4.6 Article

Direct characterization of linear-optical networks

Journal

OPTICS EXPRESS
Volume 21, Issue 11, Pages 13450-13458

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.21.013450

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Funding

  1. Centre for Quantum Computation and Communication Technology [CE110001027]
  2. Centre for Engineered Quantum Systems [CE110001013]
  3. Australian Research Council's Federation Fellow program [FF0668810]
  4. SFB program (Vienna Doctoral Program on Complex Quantum Systems - CoQuS) of the Austrian Science Fund (FWF) [W1210-2]
  5. University of Queensland Vice-Chancellor's Senior Research Fellowship program
  6. Australian Research Council Discovery Early Research Award [DE130100240]
  7. Austrian Science Fund (FWF) [W1210] Funding Source: Austrian Science Fund (FWF)
  8. Australian Research Council [DE130100240, FF0668810] Funding Source: Australian Research Council

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We introduce an efficient method for fully characterizing multimode linear-optical networks. Our approach requires only a standard laser source and intensity measurements to directly and uniquely determine all moduli and non-trivial phases of the matrix describing a network. We experimentally demonstrate the characterization of a 6x6 fiber-optic network and independently verify the results via nonclassical two-photon interference. (C) 2013 Optical Society of America

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