We construct an exact $n$-bit quantum adder with $O(n)$ gates and $O(\log n)$ depth that requires no ancillary qubits. The circuit uses only $X$, CNOT, and Toffoli gates under all-to-all connectivity and is classically reversible. Our construction accelerates the controlled ladder underlying addition. Grouping the data...
Jun-Hong Nie, Jia-Liang Tang, Xiao-Ming Sun et al.· 0 citations
Encoding classical data into quantum systems is a foundational step in the execution of nearly all quantum algorithms, and a critical bottleneck in realizing practical quantum advantage. This review provides a comprehensive account of the concepts, algorithms, and practical considerations associated with quantum data e...
Xiao-Ming Zhang, Arthur G. Rattew, Bu-Jiao Wu et al.· 2 citations
QAdapt is presented, a noise-adaptive neural pre-decoding framework for surface-code quantum error correction that captures local spatiotemporal correlations in syndrome data, sequentially adapting to evolving noise conditions while mitigating catastrophic forgetting, and forwards the residual syndrome to a conventiona...
Ran Miao, Rui Luo, Xiaohan Shan et al.· arXiv.org· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.