Microsoft Technology Licensing, LLC

Xingshan Cui

Alexei V Bocharov

Krysta Marie Svore

Martin Henri Roetteler

Vadym Kliuchnikov

Zhenghan Wang

Certain ensembles of metapletic anyons allow for topologically protected encoding and processing of quantum information. Such processing is done by sequences of gates (circuits) drawn from a certain basis of unitary metaplectic gates. A subject unitary operator required for the desired processing can be approximated to any desired precision by a circuit that has to be effectively and efficiently synthesized on a classical computer. Synthesis methods use unitary reflection operators that can be represented either exactly or by ancilla-assisted approximation over the basis of metaplectic gates based on cost-optimizing determinations made by the synthesis algorithm.

Efficient topological compilation for metaplectic anyon model

Ripple-carry and carry look-ahead adders for ternary addition and other operations include circuits that produce carry values or carry status indicators that can be stored on qutrit registers associated with input values to be processed. Inverse carry circuits are situated to reverse operations associated with the production of carry values or carry status indicators, and restored values are summed with corresponding carry values to produce ternary sums.

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Xingshan Cui