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This research presents a significant advancement in fault-tolerant quantum computing by introducing a logical catalyst protocol that reduces error rates to approximately one in a million. By enabling exact and constant-depth implementation of specific phase rotations through reusable components, the method improves upon existing techniques for fine-grained gate operations without relying on AI or machine learning algorithms.

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Wang and Colleagues Introduce Logical Catalyst Protocol for Dyadic Phase Rotation Implementation

Quantum Zeitgeist13 iulie 20265 min de cititArticolul și perspectiva sunt în engleză.

Can a quantum computation be performed with an error rate of just one in a million, despite underlying physical errors? A new protocol achieves a logical leakage rate of approximately 10−6 at a physical error rate of 10−3, using around seven attempts. This is accomplished by cultivating a reusable logical catalyst, enabling exact and constant-depth implementation of specific quantum rotations.

A surface-code cultivation protocol for reusable logical catalyst states enables exact fine dyadic phase gates via phase kickback, developed by Yichen Xu and Xiao Wang at Cornell University. Achieving a logical leakage rate of approximately 10⁻⁶ at a physical error rate of 10⁻³, using around seven attempts, this protocol improves upon existing methods by offering exactness, reusability, and constant-depth online implementation of fixed fine dyadic phases. Yichen Xu and Xiao Wang at Cornell University have created a new method for building reusable components in…

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