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arXiv · 1609.02676

Characterization of optical quantum circuits using resonant phase shifts

Menno Poot·Hong X. Tang
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Abstract

We demonstrate that important information about linear optical circuits can be obtained through the phase shift induced by integrated optical resonators. As a proof of principle, the phase of an unbalanced Mach-Zehnder interferometer is determined. Then the method is applied to a complex optical circuit designed for linear optical quantum computation. In this controlled-NOT gate with qubit initialization and tomography stages, the relative phases are determined as well as the coupling ratios of its directional couplers.

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Menno Poot, Hong X. Tang. 2016-09-09. Characterization of optical quantum circuits using resonant phase shifts. https://doi.org/10.1063/1.4962902

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