{"id":426693,"date":"2018-11-06T16:57:28","date_gmt":"2018-11-07T00:57:28","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&p=426693"},"modified":"2018-11-06T16:57:28","modified_gmt":"2018-11-07T00:57:28","slug":"universal-geometric-path-robust-majorana-magic-gate","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/universal-geometric-path-robust-majorana-magic-gate\/","title":{"rendered":"Universal Geometric Path to a Robust Majorana Magic Gate"},"content":{"rendered":"

A universal quantum computer requires a full set of basic quantum gates. With Majorana bound states one can form all necessary quantum gates in a topologically protected way, bar one. In this manuscript we present a protocol that achieves the missing, so called,\u00a0\u03c0<\/span>\/<\/span><\/span><\/span>8<\/span><\/span><\/span><\/span>\u00a0‘magic’ phase gate. The protocol is based on the manipulation of geometric phases in a universal manner, and does not require fine tuning for distinct physical realizations. The protocol converges exponentially with the number of steps in the geometric path. Furthermore, the magic gate protocol relies on the most basic hardware previously suggested for topologically protected gates, and can be extended to any-phase-gate, where\u00a0\u03c0<\/span>\/<\/span><\/span><\/span>8<\/span><\/span><\/span><\/span>\u00a0is substituted by any\u00a0\u03b1<\/span><\/span><\/span><\/span>.<\/p>\n","protected":false},"excerpt":{"rendered":"

A universal quantum computer requires a full set of basic quantum gates. With Majorana bound states one can form all necessary quantum gates in a topologically protected way, bar one. In this manuscript we present a protocol that achieves the missing, so called,\u00a0\u03c0\/8\u00a0‘magic’ phase gate. The protocol is based on the manipulation of geometric phases 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