7 papers
Soft decoding for quantum LDPC codes with experimental validation
Arda Aydin, Edwin Tham, Nicolas Delfosse +1
The decoder is a critical component of a fault-tolerant quantum computer, computing corrections based on parity-check measurements performed throughout the computation. A soft deco…
Breakeven demonstration of quantum low-density parity-check codes
Edwin Tham, Michael L. Goldman, Shantanu Debnath +8
High-rate quantum low-density parity-check (qLDPC) codes are a leading candidate for fault-tolerant quantum computing. They feature higher encoding rates than planar alternatives s…
Recursive Clifford noise reduction
Aharon Brodutch, Gregory Baimetov, Edwin Tham +1
Clifford noise reduction (CliNR) is a partial error correction scheme that reduces the logical error rate of Clifford circuits at the cost of a modest qubit and gate overhead. The…
Cyclic Hypergraph Product Code
Arda Aydin, Nicolas Delfosse, Edwin Tham
Hypergraph product (HGP) codes are one of the most popular family of quantum low-density parity-check (LDPC) codes. Circuit-level simulations show that they can achieve the same lo…
Distributed fault-tolerant quantum memories over a 2xL array of qubit modules
Edwin Tham, Min Ye, Ilia Khait +2
We propose an architecture for a quantum memory distributed over a array of modules equipped with a cyclic shift implemented via flying qubits. The logical information…
Optimized Clifford Noise Reduction: Theory, Simulations and Experiments
Edwin Tham, Nicolas Delfosse
We propose several optimizations of the CliNR partial error correction scheme which implements Clifford circuits by consuming a resource state. Errors are corrected by measuring a…
Low-cost noise reduction for Clifford circuits
Nicolas Delfosse, Edwin Tham
We propose a Clifford noise reduction (CliNR) scheme that provides a reduction of the logical error rate of Clifford circuit with lower overhead than error correction and without t…