Error Correction for Continuous Quantum Variables

Victor V. Albert, Kasper Duivenvoorden, Kyungjoo Noh +8 more

Mikael Lassen, Lars S. Madsen, Ulrik L. Andersen

Rajendra Kumar Bera

Samuel L. Braunstein

We propose an error correction coding algorithm for continuous quantum variables. We use this algorithm to construct a highly efficient 5-wave-packet code which can correct arbitrary single wave-packet errors. We show that this class of continuous variable codes is robust against imprecision in the error syndromes. A potential implementation of the scheme is presented.

Jiaxu Wen, Xuchao Liu

In this paper, a comprehensive overview of Gaussian data modulation and error correction negotiation in Continuous Variable Quantum Key Distribution (CVQKD) is presented. Emphasizing on CVQKD systems under varying Signal-to-Noise Ratios (SNR), a variable code rate Low-Density Parity-Check (LDPC) error correction method is employed. Our findings indicate that compared to the fixed code rate LDPC error correction, the variable code rate LDPC showcases superior error correction performance in CVQKD systems subjected to fluctuating SNR.