Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Boulevard, Tucson, Arizona 85721, USA.
Opt Lett. 2010 May 1;35(9):1464-6. doi: 10.1364/OL.35.001464.
I propose encoder and decoder architectures for entanglement-assisted (EA) quantum low-density parity-check (LDPC) codes suitable for all-optical implementation. I show that two basic gates needed for EA quantum error correction, namely, controlled-NOT (CNOT) and Hadamard gates can be implemented based on Mach-Zehnder interferometer. In addition, I show that EA quantum LDPC codes from balanced incomplete block designs of unitary index require only one entanglement qubit to be shared between source and destination.
我提出了适用于全光实现的纠缠辅助（EA）量子低密度奇偶校验（LDPC）码的编码器和解码器架构。我表明，用于 EA 量子纠错的两个基本门，即受控-NOT（CNOT）门和 Hadamard 门，可以基于马赫-曾德尔干涉仪来实现。此外，我还表明，来自酉指数的完备不完整区组设计的 EA 量子 LDPC 码仅需要在源和目的地之间共享一个纠缠量子位。
