Fault-Tolerant Quantum LDPC Encoders

2024/05/12 by Sharma, Abhi Kumar, Garani, Shayan Srinivasa
#FOS: Computer and information sciences #FOS: Physical sciences #Information Theory (cs.IT) #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2405.07242

Abstract

We propose fault-tolerant encoders for quantum low-density parity check (LDPC) codes. By grouping qubits within a quantum code over contiguous blocks and applying preshared entanglement across these blocks, we show how transversal implementation can be realized. The proposed encoder reduces the error propagation while using multi-qubit gates and is applicable for both entanglement-unassisted and entanglement-assisted quantum LDPC codes.

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