Improved quantum error correction with randomized compiling

• DOI: 10.48550/arxiv.2303.06846
• Publication Date: 2023-01-01
• Authors: Aditya Jain; Pavithran Iyer; Stephen D. Bartlett; Joseph Emerson
• Keywords: Code (set theory); Quantum noise

Current hardware for quantum computing suffers from high levels of noise, and so to achieve practical fault-tolerant will require powerful efficient methods correct errors in circuits. Here, we explore the role effectiveness using noise tailoring techniques improve performance error correcting codes. Noise such as randomized compiling (RC) convert complex coherent processes effective stochastic noise. While it is known that this can be leveraged design diagnostic tools, its impact on Of particular interest important class errors, arising control where RC has maximum effect -- converting these into purely errors. For show here delivers an improvement concatenated Steane code by several orders magnitude. We also below a threshold rotation angle, gains logical fidelity arbitrarily magnified increasing size These results suggest lead significant reduction resource overhead required fault tolerance.