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arxiv: 0801.2360 · v1 · submitted 2008-01-15 · 🪐 quant-ph

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Subsystem stabilizer codes cannot have a universal set of transversal gates for even one encoded qudit

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classification 🪐 quant-ph
keywords universalcodesgatesquantumstabilizertransversalcannotcomputation
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A long-standing open problem in fault-tolerant quantum computation has been to find a universal set of transversal gates. As three of us proved in arXiv: 0706.1382, such a set does not exist for binary stabilizer codes. Here we generalize our work to show that for subsystem stabilizer codes in $d$ dimensional Hilbert space, such a universal set of transversal gates cannot exist for even one encoded qudit, for any dimension $d$, prime or nonprime. This result strongly supports the idea that other primitives, such as quantum teleportation, are necessary for universal fault-tolerant quantum computation, and may be an important factor for fault tolerance noise thresholds.

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