Abstract
Implementation of quantum technologies requires the ability to realize arbitrary unitary operators, enabling applications such as efficient quantum simulation and computation. In principle, linear photonic devices can be used to experimentally realize any N×N unitary operator [1]. However, a significant remaining practical challenge is to characterize the device once it is built. Performing full quantum process tomography of a device requires the full suite of quantum tools such as N-mode quantum state preparation and measurement and is relatively slow and impractical for large interferometric devices.
© 2013 IEEE
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