{"id":314018,"date":"2018-11-06T17:09:18","date_gmt":"2018-11-07T01:09:18","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&p=314018"},"modified":"2018-11-06T17:09:18","modified_gmt":"2018-11-07T01:09:18","slug":"unitary-error-bases-constructions-equivalence-applications","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/unitary-error-bases-constructions-equivalence-applications\/","title":{"rendered":"Unitary Error Bases: Constructions, Equivalence, and Applications"},"content":{"rendered":"

Unitary error bases are fundamental primitives in quantum computing, which are instrumental for quantum error-correcting codes and the design of teleportation and super-dense coding schemes. There are two prominent constructions of such bases: an algebraic construction using projective representations of finite groups and a combinatorial construction using Latin squares and Hadamard matrices. An open problem posed by Schlingemann and Werner relates these two constructions, and asks whether each algebraic construction is equivalent to a combinatorial construction. We answer this question by giving an explicit counterexample in dimension 165 which has been constructed with the help of a computer algebra system. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Unitary error bases are fundamental primitives in quantum computing, which are instrumental for quantum error-correcting codes and the design of teleportation and super-dense coding schemes. There are two prominent constructions of such bases: an algebraic construction using projective representations of finite groups and a combinatorial construction using Latin squares and Hadamard matrices. 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