Quantum error correction used to actually correct errors Microsoft and Quantinuum correct problems when entangling pairs of qubits.

The solution to this is to use what are called logical qubits, which distribute quantum information across multiple hardware qubits and allow the detection and correction of errors when they occur.

This provided the impetus for researchers to develop the error detection and correction codes discussed here. Without FEC the world would be quite different.

A new technical paper titled “Error Detection and Correction Codes for Safe In-Memory Computations” was published by researchers at Robert Bosch, Forschungszentrum Julich, and Newcastle University.

Two other established error-detection techniques are checksum (add up all the bits of the entire message, document or program and produce a single sum) and cyclic redundancy check, which operates ...

This allows for the detection of errors without collapsing the quantum information. The system uses an ancilla (like a transmon qubit) to perform these measurements, ensuring that it can detect the ...