WebMay 3, 2024 · $\begingroup$ I'm not talking at all about code concatenation, which is done in the first paper. I just noticed that in that paper, the authors claim that this other technique (I've heard it called code switching) does not yield a set universal operations. The Eastin–Knill theorem is a no-go theorem that states: "No quantum error correcting code can have a continuous symmetry which acts transversely on physical qubits". In other words, no quantum error correcting code can transversely implement a universal gate set. Since quantum computers are … See more The approximate version of the Eastin–Knill theorem states: "If a code admits a continuous symmetry pertaining to a Lie group and corrects erasure with fixed accuracy, then for each logical qubit, a number of physical … See more The Eastin–Knill theorem does not prohibit protocols that provide fault tolerant quantum computation. Some methods of getting around … See more

[2111.06360] Quantum error correction meets continuous …

WebJul 17, 2024 · Such codes, however, are ruled out by the Eastin-Knill theorem. Moreover, the theorem also rules out codes which are covariant with respect to the action of transversal unitary operations forming continuous symmetries. In this work, starting from an arbitrary code, we construct approximate codes which are covariant with respect to the … WebIt is known that quantum error-correcting codes covariant with respect to continuous symmetries cannot correct erasure errors perfectly (an important case being the Eastin-Knill theorem), in contrast to the case without symmetry constraints. imi precision engineering rockford il

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WebNov 26, 2008 · Bryan Eastin, Emanuel Knill Transversal gates play an important role in the theory of fault-tolerant quantum computation due to their simplicity and robustness to … WebJul 17, 2024 · The approach provides insight into how time evolution in the bulk corresponds to time evolution on the boundary without violating the Eastin-Knill theorem, and the five-rotor code can be stacked to form a covariant holographic code. 58 PDF An Introduction to Quantum Error Correction and Fault-Tolerant Quantum Computation D. Gottesman WebThe Eastin-Knill theorem may be viewed as a restric-tion on codes covariant with respect to some continuous symmetry group Gthat acts as a product of local sym-metries. … imiprothrine