The repetition code works in a classical channel, because classical bits are easy to measure and to repeat. This approach does not work for a quantum channel in which, due to the 展开

Several proposals have been made for storing error-correctable quantum information in bosonic modes. Unlike a two-level system, a quantum harmonic oscillator has … 展开

There have been several experimental realizations of CSS-based codes. The first demonstration was with nuclear magnetic resonance qubits. … 展开

• Error detection and correction
• Soft error 展开

The error channel may induce either a bit flip, a sign flip (i.e., a phase flip), or both. It is possible to correct for both types of errors on a logical qubit … 展开

Over time, researchers have come up with several codes:
• Peter Shor's 9-qubit-code, a.k.a. the Shor code, encodes 1 … 展开

In 2022, research at University of Engineering and Technology Lahore demonstrated error-cancellation by inserting single-qubit Z-axis rotation gates into strategically chosen locations of the superconductor quantum circuits. The scheme has been shown … 展开